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Gearbox Service Parts
For gearboxes WITHOUT Limited Slip Differentials (LSD)
Specifically designed for racing vehicle gearboxes, including those used in track, rally, and raid events. Ideal for all mechanical transmissions, whether synchronized or non-synchronized gearboxes, gearbox/differential units, transfer gearboxes, and hypoid differentials WITHOUT limited slip differentials.
Performs exceptionally well under shock loads, heavy loads at low RPM, or moderate loads at high RPM.
PERFORMANCE:
- Standards: API GL4 & GL5 / MIL-L-2105D
- 100% synthetic extreme pressure lubricant provides superior anti-wear protection, enhanced high-temperature resistance, and extended service life.
- Zero shear loss: Maintains an unshearable oil film even under extreme conditions.
- Retains 90 grade viscosity after the KRL 20-hour shear test, meeting the SAE J306 Standard, updated in July 1998.
- Exceptional lubricating properties reduce friction and wear.
- 90 grade viscosity at high temperatures ensures excellent oil film resistance and reduces transmission noise.
- Remains fluid at low temperatures for smoother gear shifts when the gearbox is cold.
- Reduces effort required for shifting gears.
- Compatible with all types of seals and yellow metals used in gearbox design.
- Offers anti-corrosion and anti-foam properties.
RECOMMENDATIONS: Change the oil according to the manufacturer's guidelines, and adjust based on your specific usage conditions.
This kit is comprised of the following items:
For gearboxes WITHOUT Limited Slip Differentials (LSD)
Specifically designed for racing vehicle gearboxes, including those used in track, rally, and raid events. Ideal for all mechanical transmissions, whether synchronized or non-synchronized gearboxes, gearbox/differential units, transfer gearboxes, and hypoid differentials WITHOUT limited slip differentials.
Performs exceptionally well under shock loads, heavy loads at low RPM, or moderate loads at high RPM.
PERFORMANCE:
- Standards: API GL4 & GL5 / MIL-L-2105D
- 100% synthetic extreme pressure lubricant provides superior anti-wear protection, enhanced high-temperature resistance, and extended service life.
- Zero shear loss: Maintains an unshearable oil film even under extreme conditions.
- Retains 90 grade viscosity after the KRL 20-hour shear test, meeting the SAE J306 Standard, updated in July 1998.
- Exceptional lubricating properties reduce friction and wear.
- 90 grade viscosity at high temperatures ensures excellent oil film resistance and reduces transmission noise.
- Remains fluid at low temperatures for smoother gear shifts when the gearbox is cold.
- Reduces effort required for shifting gears.
- Compatible with all types of seals and yellow metals used in gearbox design.
- Offers anti-corrosion and anti-foam properties.
RECOMMENDATIONS: Change the oil according to the manufacturer's guidelines, and adjust based on your specific usage conditions.
This kit is comprised of the following items:
For gearboxes WITHOUT Limited Slip Differentials (LSD)
Specifically designed for racing vehicle gearboxes, including those used in track, rally, and raid events. Ideal for all mechanical transmissions, whether synchronized or non-synchronized gearboxes, gearbox/differential units, transfer gearboxes, and hypoid differentials WITHOUT limited slip differentials.
Performs exceptionally well under shock loads, heavy loads at low RPM, or moderate loads at high RPM.
PERFORMANCE:
- Standards: API GL4 & GL5 / MIL-L-2105D
- 100% synthetic extreme pressure lubricant provides superior anti-wear protection, enhanced high-temperature resistance, and extended service life.
- Zero shear loss: Maintains an unshearable oil film even under extreme conditions.
- Retains 90 grade viscosity after the KRL 20-hour shear test, meeting the SAE J306 Standard, updated in July 1998.
- Exceptional lubricating properties reduce friction and wear.
- 90 grade viscosity at high temperatures ensures excellent oil film resistance and reduces transmission noise.
- Remains fluid at low temperatures for smoother gear shifts when the gearbox is cold.
- Reduces effort required for shifting gears.
- Compatible with all types of seals and yellow metals used in gearbox design.
- Offers anti-corrosion and anti-foam properties.
RECOMMENDATIONS: Change the oil according to the manufacturer's guidelines, and adjust based on your specific usage conditions.
This kit is comprised of the following items:
For gearboxes WITHOUT Limited Slip Differentials (LSD)
Specifically designed for racing vehicle gearboxes, including those used in track, rally, and raid events. Ideal for all mechanical transmissions, whether synchronized or non-synchronized gearboxes, gearbox/differential units, transfer gearboxes, and hypoid differentials WITHOUT limited slip differentials.
Performs exceptionally well under shock loads, heavy loads at low RPM, or moderate loads at high RPM.
PERFORMANCE:
- Standards: API GL4 & GL5 / MIL-L-2105D
- 100% synthetic extreme pressure lubricant provides superior anti-wear protection, enhanced high-temperature resistance, and extended service life.
- Zero shear loss: Maintains an unshearable oil film even under extreme conditions.
- Retains 90 grade viscosity after the KRL 20-hour shear test, meeting the SAE J306 Standard, updated in July 1998.
- Exceptional lubricating properties reduce friction and wear.
- 90 grade viscosity at high temperatures ensures excellent oil film resistance and reduces transmission noise.
- Remains fluid at low temperatures for smoother gear shifts when the gearbox is cold.
- Reduces effort required for shifting gears.
- Compatible with all types of seals and yellow metals used in gearbox design.
- Offers anti-corrosion and anti-foam properties.
RECOMMENDATIONS: Change the oil according to the manufacturer's guidelines, and adjust based on your specific usage conditions.
This kit is comprised of the following items:
For gearboxes WITH Limited Slip Differentials (LSD)
Specifically designed for racing vehicle gearboxes, including those used in track, rally, and raid events. Ideal for all mechanical transmissions, whether synchronized or non-synchronized gearboxes, gearbox/differential units, transfer gearboxes, and all hypoid differentials WITH limited slip differentials.
Performs exceptionally well under shock loads, heavy loads at low RPM, or moderate loads at high RPM.
PERFORMANCE:
- Standards: API GL5
- 100% synthetic extreme pressure lubricant provides superior anti-wear protection, enhanced high-temperature resistance, and extended service life.
- Zero shear loss: Maintains an unshearable oil film even under extreme conditions.
- Retains 90 grade viscosity after the KRL 20-hour shear test, meeting the SAE J306 Standard, updated in July 1998.
- Exceptional lubricating properties reduce friction and wear.
- 90 grade viscosity at high temperatures ensures excellent oil film resistance and reduces transmission noise.
- Remains fluid at low temperatures for smoother gear shifts when the gearbox is cold.
- Reduces effort required for shifting gears.
- Compatible with all types of seals and yellow metals used in gearbox design.
- Offers anti-corrosion and anti-foam properties.
RECOMMENDATIONS: Change the oil according to the manufacturer's guidelines, and adjust based on your specific usage conditions.
This kit is comprised of the following items:
For gearboxes WITH Limited Slip Differentials (LSD)
Specifically designed for racing vehicle gearboxes, including those used in track, rally, and raid events. Ideal for all mechanical transmissions, whether synchronized or non-synchronized gearboxes, gearbox/differential units, transfer gearboxes, and all hypoid differentials WITH limited slip differentials.
Performs exceptionally well under shock loads, heavy loads at low RPM, or moderate loads at high RPM.
PERFORMANCE:
- Standards: API GL5
- 100% synthetic extreme pressure lubricant provides superior anti-wear protection, enhanced high-temperature resistance, and extended service life.
- Zero shear loss: Maintains an unshearable oil film even under extreme conditions.
- Retains 90 grade viscosity after the KRL 20-hour shear test, meeting the SAE J306 Standard, updated in July 1998.
- Exceptional lubricating properties reduce friction and wear.
- 90 grade viscosity at high temperatures ensures excellent oil film resistance and reduces transmission noise.
- Remains fluid at low temperatures for smoother gear shifts when the gearbox is cold.
- Reduces effort required for shifting gears.
- Compatible with all types of seals and yellow metals used in gearbox design.
- Offers anti-corrosion and anti-foam properties.
RECOMMENDATIONS: Change the oil according to the manufacturer's guidelines, and adjust based on your specific usage conditions.
This kit is comprised of the following items:
For gearboxes WITH Limited Slip Differentials (LSD)
Specifically designed for racing vehicle gearboxes, including those used in track, rally, and raid events. Ideal for all mechanical transmissions, whether synchronized or non-synchronized gearboxes, gearbox/differential units, transfer gearboxes, and all hypoid differentials WITH limited slip differentials.
Performs exceptionally well under shock loads, heavy loads at low RPM, or moderate loads at high RPM.
PERFORMANCE:
- Standards: API GL5
- 100% synthetic extreme pressure lubricant provides superior anti-wear protection, enhanced high-temperature resistance, and extended service life.
- Zero shear loss: Maintains an unshearable oil film even under extreme conditions.
- Retains 90 grade viscosity after the KRL 20-hour shear test, meeting the SAE J306 Standard, updated in July 1998.
- Exceptional lubricating properties reduce friction and wear.
- 90 grade viscosity at high temperatures ensures excellent oil film resistance and reduces transmission noise.
- Remains fluid at low temperatures for smoother gear shifts when the gearbox is cold.
- Reduces effort required for shifting gears.
- Compatible with all types of seals and yellow metals used in gearbox design.
- Offers anti-corrosion and anti-foam properties.
RECOMMENDATIONS: Change the oil according to the manufacturer's guidelines, and adjust based on your specific usage conditions.
This kit is comprised of the following items:
For gearboxes WITH Limited Slip Differentials (LSD)
Specifically designed for racing vehicle gearboxes, including those used in track, rally, and raid events. Ideal for all mechanical transmissions, whether synchronized or non-synchronized gearboxes, gearbox/differential units, transfer gearboxes, and all hypoid differentials WITH limited slip differentials.
Performs exceptionally well under shock loads, heavy loads at low RPM, or moderate loads at high RPM.
PERFORMANCE:
- Standards: API GL5
- 100% synthetic extreme pressure lubricant provides superior anti-wear protection, enhanced high-temperature resistance, and extended service life.
- Zero shear loss: Maintains an unshearable oil film even under extreme conditions.
- Retains 90 grade viscosity after the KRL 20-hour shear test, meeting the SAE J306 Standard, updated in July 1998.
- Exceptional lubricating properties reduce friction and wear.
- 90 grade viscosity at high temperatures ensures excellent oil film resistance and reduces transmission noise.
- Remains fluid at low temperatures for smoother gear shifts when the gearbox is cold.
- Reduces effort required for shifting gears.
- Compatible with all types of seals and yellow metals used in gearbox design.
- Offers anti-corrosion and anti-foam properties.
RECOMMENDATIONS: Change the oil according to the manufacturer's guidelines, and adjust based on your specific usage conditions.
This kit is comprised of the following items:
For gearboxes WITH AND without Limited Slip Differentials (LSD)
Specifically designed for racing vehicle gearboxes, including those used in track, rally, and raid events. Ideal for all mechanical transmissions, whether synchronized or non-synchronized gearboxes, gearbox/differential units, transfer gearboxes, and all hypoid differentials WITH AND WITHOUT limited slip differentials.
Performs exceptionally well under shock loads, heavy loads at low RPM, or moderate loads at high RPM.
PERFORMANCE:
- Standards: API GL5
- 100% synthetic extreme pressure lubricant provides superior anti-wear protection, enhanced high-temperature resistance, and extended service life.
- Zero shear loss: Maintains an unshearable oil film even under extreme conditions.
- Retains 14 grade viscosity after the KRL 20-hour shear test, meeting the SAE J306 Standard, updated in July 1998.
- Exceptional lubricating properties reduce friction and wear.
- 90 grade viscosity at high temperatures ensures excellent oil film resistance and reduces transmission noise.
- Remains fluid at low temperatures for smoother gear shifts when the gearbox is cold.
- Reduces effort required for shifting gears.
- Compatible with all types of seals and yellow metals used in gearbox design.
- Offers anti-corrosion and anti-foam properties.
RECOMMENDATIONS: Change the oil according to the manufacturer's guidelines, and adjust based on your specific usage conditions.
This kit is comprised of the following items:
For gearboxes WITH AND without Limited Slip Differentials (LSD)
Specifically designed for racing vehicle gearboxes, including those used in track, rally, and raid events. Ideal for all mechanical transmissions, whether synchronized or non-synchronized gearboxes, gearbox/differential units, transfer gearboxes, and all hypoid differentials WITH AND WITHOUT limited slip differentials.
Performs exceptionally well under shock loads, heavy loads at low RPM, or moderate loads at high RPM.
PERFORMANCE:
- Standards: API GL5
- 100% synthetic extreme pressure lubricant provides superior anti-wear protection, enhanced high-temperature resistance, and extended service life.
- Zero shear loss: Maintains an unshearable oil film even under extreme conditions.
- Retains 14 grade viscosity after the KRL 20-hour shear test, meeting the SAE J306 Standard, updated in July 1998.
- Exceptional lubricating properties reduce friction and wear.
- 90 grade viscosity at high temperatures ensures excellent oil film resistance and reduces transmission noise.
- Remains fluid at low temperatures for smoother gear shifts when the gearbox is cold.
- Reduces effort required for shifting gears.
- Compatible with all types of seals and yellow metals used in gearbox design.
- Offers anti-corrosion and anti-foam properties.
RECOMMENDATIONS: Change the oil according to the manufacturer's guidelines, and adjust based on your specific usage conditions.
This kit is comprised of the following items:
Automatic transmission fluid for use in dual clutch transmissions (DCT)
Features and Benefits
- XF Premium provides enhanced low temperature flow when cold starting, instantly protecting the vital components of the gearbox from the very start of every journey.
- XF Premium gearbox oil maximises viscosity stability at high temperatures. This reduces gearbox wear giving superior component protection.
- The oil delivers outstanding instant protection under hot and cold temperatures and protects against corrosion, oxidation, deposits and foam.
- XF Premium oil is specifically formulated for use in hybrid systems including self-charging hybrid electric vehicles (HEV) and plug in hybrid electric vehicles (PHEV).
Product Information
A premium OEM automatic transmission fluid designed for use in wet DCT gearboxes. Predominantly for European vehicles.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
8380
The product you are viewing cross references to these numbers
Front Differential Clutch Coupling Oil SAE 75W-80 - 1ltr
High-performance SAE 75W-80 front differential clutch coupling fluid designed specifically for Porsche AWD systems fitted to the 997.2, 997 Turbo, and 991.1.
This specialised fluid is formulated to support the precise operation of the front differential coupling within Porsche Traction Management (PTM) systems. It ensures smooth torque distribution between axles while maintaining optimal lubrication, temperature stability, and drivetrain efficiency.
Engineered to meet Porsche specifications, this fluid provides excellent wear protection and consistent performance under high load conditions, making it essential for both routine servicing and performance maintenance.
Key Features
• SAE 75W-80 high-performance drivetrain fluid
• Designed for Porsche front differential coupling systems
• Suitable for Porsche 997.2, 997 Turbo, and 991.1 AWD models
• Supports Porsche Traction Management (PTM)
• Ensures smooth torque transfer and system response
• High resistance to heat, friction, and breakdown
• Protects internal drivetrain components
Function and Purpose
This fluid is essential for the correct operation of Porsche AWD systems.
It helps to:
• Lubricate front differential coupling components
• Enable precise torque distribution between front and rear axles
• Reduce friction and internal wear
• Maintain stable performance under load
• Protect against overheating and fluid degradation
Why Replace Differential Coupling Fluid
Over time, drivetrain fluids degrade due to thermal stress and contamination.
Common issues include:
• Reduced lubrication performance
• Increased wear in coupling components
• Sluggish or inconsistent AWD response
• Overheating and fluid breakdown
Regular fluid replacement ensures optimal performance and longevity of the AWD system.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
00004330540
The product you are viewing cross references to these numbers
ZF Lifeguard Fluid 7.3 DCT
Fits:
Porsche 718 Cayman 2016>>
According to spare part number of vehicle manufacturer:
- Fuchs Titan FFL-3 (ZF approval number ZF004742)
- ZF Oil No. 0671.090.534 (ZF LifeguardFluid 7.3 DCT / ZF Lifeguard eFluid 2), (ZF approval number ZF004795)
- Porsche Oil No. 999.917.080.00
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
00004330513
The product you are viewing cross references to these numbers
OE-Comparison 00004320730 | 00004330514 | 00004320729 | 00004330513 | 99991708000
Specification: BMW 7-Gang Drivelogic, BMW Drivelogic 7-speed, DCTF-1, DCTF-1+, Dia Queen SSTF-I, Ford WSS-M2C936-A, MB 236.21, MB 236.24, Mitsubishi XTC-SST, MTF-LT-5, Pentosin FFL-3, Pentosin FFL-4, Porsche DCT, PSA DCS 6-speed, Renault EDC 6-speed, VW TL 52 182
Product Information
• High protection against freezing, corrosion, and cavitation
• Excellent lubricating properties, high ageing resistance, and high wetting and adhesion properties
• Prevention of deposits and foam formation
• Compliance with the requirements of vehicle manufacturers
Vehicle Repairs. We've Got What it Takes.
Only the right oil can guarantee continuous gear lubrication. Gear oils from febi are therefore precisely matched to the special requirements of vehicle manufacturers.
In addition to their favourable friction behaviour, febi gear oils offer optimal resistance to low temperatures and guarantee the best possible corrosion protection.
Quality by Conviction
Oils from febi are not universal products, but rather are tailored to the special requirements of vehicle manufacturers.
The gear oils offered consist of the most efficient base oils and modern additives. Thanks to their thermal stability, the oils are ideally resistant to ageing and provide maximum wear protection in all operating conditions.
Optimal Packaging Design
Gear oils from febi are an excellent choice. This is demonstrated not only by the quality - in many cases, febi transmission fluid even exceeds the requirements of vehicle manufacturers - but also by the user-friendly packaging design.
The clear labelling of the products through the use of color-coding makes their identification simple. Special recessed grips on the recyclable, leak-proof PE plastic bottles make filling noticeably easier. Viewing strips also provide information about the current filling level at all times.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
00004330513
The product you are viewing cross references to these numbers
OE-Comparison 00004320730 | 00004330514 | 00004320729 | 00004330513 | 99991708000
Specification: BMW 7-Gang Drivelogic, BMW Drivelogic 7-speed, DCTF-1, DCTF-1+, Dia Queen SSTF-I, Ford WSS-M2C936-A, MB 236.21, MB 236.24, Mitsubishi XTC-SST, MTF-LT-5, Pentosin FFL-3, Pentosin FFL-4, Porsche DCT, PSA DCS 6-speed, Renault EDC 6-speed, VW TL 52 182
Product Information
• High protection against freezing, corrosion, and cavitation
• Excellent lubricating properties, high ageing resistance, and high wetting and adhesion properties
• Prevention of deposits and foam formation
• Compliance with the requirements of vehicle manufacturers
Vehicle Repairs. We've Got What it Takes.
Only the right oil can guarantee continuous gear lubrication. Gear oils from febi are therefore precisely matched to the special requirements of vehicle manufacturers.
In addition to their favourable friction behaviour, febi gear oils offer optimal resistance to low temperatures and guarantee the best possible corrosion protection.
Quality by Conviction
Oils from febi are not universal products, but rather are tailored to the special requirements of vehicle manufacturers.
The gear oils offered consist of the most efficient base oils and modern additives. Thanks to their thermal stability, the oils are ideally resistant to ageing and provide maximum wear protection in all operating conditions.
Optimal Packaging Design
Gear oils from febi are an excellent choice. This is demonstrated not only by the quality - in many cases, febi transmission fluid even exceeds the requirements of vehicle manufacturers - but also by the user-friendly packaging design.
The clear labelling of the products through the use of color-coding makes their identification simple. Special recessed grips on the recyclable, leak-proof PE plastic bottles make filling noticeably easier. Viewing strips also provide information about the current filling level at all times.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
00004330513
The product you are viewing cross references to these numbers
PLEASE NOTE:
Due to its size, weight or fragility, this item requires additional protective packaging to make sure it reaches you undamaged. A small packing surcharge is applied to cover these specialist materials and the extra care taken preparing your order for transit.
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
LIQUI MOLY Fully Synthetic Gear Oil (GL 5) SAE 75W-90 for Gearbox and Differential (non LSD)
LIQUI MOLY Fully Synthetic Gear Oil (GL 5) SAE 75W-90 is a premium, high-performance gear lubricant developed for heavily loaded manual gearboxes, auxiliary transmissions, modern transaxle systems and final drives without limited-slip differentials.
Fits:
Gearbox
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Differential (without Limited Slip Diff)
- Porsche 928 4.5L 1978-82 (Automatic)
- Porsche 928S 4.7L 1981-83 (Automatic)
- Porsche 928S2 4.7L 1984-86 (Automatic)
- Porsche 928S4 5.0L 1987-92 (Automatic)
- Porsche 928GTS 5.4L 1992-95 (Automatic)
- Porsche 968 3.0L 1992-94 (Tiptronic)
Always check the required Porsche oil specification and viscosity for the individual model before ordering.
Manufactured using fully synthetic base oils and advanced additive technology, this high-quality gear oil provides outstanding wear protection, excellent resistance to ageing and reliable lubrication under demanding operating conditions.
Its SAE 75W-90 viscosity grade delivers effective lubrication across a wide temperature range, maintaining smooth gear operation during cold starts while providing dependable protection at elevated operating temperatures.
The carefully balanced friction characteristics help reduce gearshift resistance and transmission noise, making it particularly suitable for compatible manual transmissions and transaxle assemblies requiring an API GL5 lubricant.
Specification: API GL5
Application: Compatible manual transmissions, transaxles and final drives
without limited-slip differentials
What Does Fully Synthetic Gear Oil GL5 75W-90 Do?
Gear oil lubricates and protects the moving components inside manual transmissions, transaxles and differential assemblies.
These components operate under significant mechanical pressure and rely on the correct lubricant to reduce friction, control wear and maintain smooth operation.
LIQUI MOLY Fully Synthetic Gear Oil SAE 75W-90 is designed
to:
- Lubricate gears, shafts, bearings and other moving components
- Provide excellent protection against wear
- Maintain a strong lubricating film under high mechanical loads
- Reduce friction and gearshift resistance
- Help minimise transmission noise
- Protect internal components against corrosion
- Maintain stable viscosity across changing temperatures
- Resist oxidation and premature ageing
- Support reliable operation under demanding driving conditions
Its fully synthetic formulation helps maintain consistent lubrication even when exposed to substantial temperature fluctuations.
Why Is High-Quality Gear Oil Important?
Manual gearboxes, transaxles and final drives rely on the correct lubricant to protect their internal components and maintain reliable operation.
Gear teeth and bearings are subjected to repeated mechanical loading, particularly during acceleration, deceleration and high-speed driving.
Using an unsuitable or deteriorated lubricant can contribute to increased friction, gear wear, transmission noise and difficult gear changes.
LIQUI MOLY Fully Synthetic Gear Oil GL5 75W-90 is formulated to provide excellent high-pressure protection and stable friction characteristics in compatible transmissions.
Why Choose Fully Synthetic SAE 75W-90 Gear Oil?
Fully synthetic gear oils offer excellent temperature stability and resistance to ageing compared with conventional mineral-based lubricants.
The SAE 75W-90 viscosity grade provides effective lubrication across a broad operating temperature range.
Benefits include:
- Reliable lubrication during cold starts
- Excellent protection at high operating temperatures
- Strong resistance to mechanical stress
- Consistent viscosity characteristics
- Reduced transmission noise
- Smooth gearshift operation in compatible gearboxes
- Excellent long-term wear protection
The correct viscosity and specification must always be selected according to the vehicle or transmission manufacturer's requirements.
Why Does Gear Oil Deteriorate?
Transmission and differential oils are exposed to heat, pressure and repeated mechanical loading throughout their service life.
Over time, these conditions can reduce the lubricant's protective properties.
Common causes of deterioration include:
- Prolonged exposure to high operating temperatures
- Oxidation and ageing of the oil
- Contamination from normal gear and bearing wear
- Heavy driving loads and repeated acceleration
- Moisture entering the transmission housing
- Incorrect oil levels Extended service intervals
- Use of an unsuitable lubricant specification
Deteriorated gear oil can contribute to increased noise, difficult gear changes and premature wear of internal transmission components.
When Should Gear Oil Be Replaced?
Gear oil should be replaced according to the vehicle or transmission manufacturer's recommended service schedule.
The appropriate interval depends on the gearbox design, operating conditions and vehicle usage.
A transmission or differential inspection may be required if
the vehicle develops:
- Increased gearbox or final-drive noise
- Difficult or notchy gear changes
- Unusual whining or rumbling sounds
- Visible transmission oil leaks
- Contaminated or degraded lubricant
- Excessive metallic particles in the drained oil
- A scheduled gearbox or differential service
These symptoms may also indicate mechanical wear or other faults, so replacing the lubricant alone may not resolve the problem.
Porsche Manual Gearbox & Transaxle Applications
LIQUI MOLY Fully Synthetic Gear Oil GL5 SAE 75W-90 may be suitable for selected Porsche manual gearbox, transaxle or final-drive applications where the manufacturer specifies an API GL5 SAE 75W-90 lubricant.
However, transmission lubricant requirements vary considerably between models and gearbox generations.
This product must not be assumed suitable for every Porsche manual transmission, differential or transaxle.
In particular, some synchronised manual gearboxes require specific friction characteristics or lubricant approvals that differ from conventional API GL5 gear oils.
Always confirm the correct oil specification using the Porsche workshop information or the relevant gearbox manufacturer's recommendations.
This product is intended for compatible assemblies without limited-slip differentials. Where a limited-slip differential requires a dedicated LS lubricant, a suitable limited-slip gear oil should be selected instead.
Application & Service Instructions
Always follow the vehicle or transmission manufacturer's instructions regarding the correct oil specification, filling quantity and service interval.
Drain the existing gear oil using the recommended service procedure and inspect the old lubricant for signs of contamination or excessive wear.
LIQUI MOLY confirms that this product is miscible with residual mineral-based oil remaining in transmissions and axle drives during an oil change.
However, the correct lubricant specification must still be observed.
Fill the transmission or differential to the manufacturer's specified level and inspect for leaks following servicing.
Dispose of used gear oil responsibly through an approved waste oil collection facility.
At Design911, we supply a wide range of gearbox service parts for Porsche models, helping you maintain smooth, precise gear changes and keep your transmission performing as it should.
Why do Porsche Gearbox Service Parts matter?Gearbox service parts directly affect how cleanly and consistently your Porsche selects gears in everyday driving and under load. Over time, internal components, seals and gaskets can wear, harden or degrade, leading to notchy shifts, leaks and increased internal wear. Replacing tired or damaged parts helps your Porsche feel better cared for and can prevent small issues turning into expensive transmission repairs later on.
- Keep your Porsche looking smart rather than tired or neglected
- Help protect the surrounding area from dirt and corrosion where relevant
- Reduce minor niggles such as looseness, rattles or mismatched parts
- Support long-term enjoyment, pride of ownership and potential resale value
Individual replacement parts
Specific items to address a particular area or issue without changing everything at once.
- Ideal for targeted repairs
- Lets you replace only what is needed
- Helps keep initial costs under control
Matched sets or pairs
Components supplied together so both sides or related items are renewed at the same time.
- Consistent feel and performance
- Helps avoid uneven wear or behaviour
- A sensible choice for routine maintenance
Complete kits
Grouped parts designed to refresh a whole system or area in one go, useful for upgrades and restorations.
- Everything specified in a single package
- Saves time compared with sourcing parts individually
- Ideal when upgrading or restoring your Porsche
At Design911, we stock genuine Porsche parts where available, plus OEM-equivalent and carefully selected aftermarket brands. This lets you choose between keeping things original, adding subtle upgrades or managing budgets on everyday maintenance.
9products
We are the source of high quality and unique Porsche performance parts for both club and professional racing.
Castrol
Castrol is a long-established lubricant specialist with a strong background in high-performance and motorsport applications. Their products are widely used to support reliable lubrication and protection in demanding gearbox and drivetrain use.
Kits
Design911 offers an extensive selection of package deals for Porsche parts, providing an ideal solution for Porsche enthusiasts looking to upgrade, maintain, or personalise their models. These packages group complementary components to help ensure compatibility and convenience.
Mahle
Mahle supplies a wide range of Porsche-related powertrain components, focusing on engine and drivetrain systems, filtration and thermal management. Their products are widely used in the automotive industry and are known for consistent specification and compatibility.
Meyle
Meyle produces a broad portfolio of aftermarket components and is represented in Porsche workshops worldwide. Their range is aimed at dependable fitment and everyday reliability when servicing and maintaining Porsche models.
When should you review or replace your Porsche gearbox service parts?Checking gearbox service parts regularly helps you spot wear, damage or age-related deterioration before it affects comfort, refinement or leads to more expensive repairs later on.
- Existing parts are worn, cracked, scuffed, faded, corroded or missing
- You notice looseness, vibration or an untidy appearance around the area they sit in
- You have had related work carried out and want everything to look and feel consistent
- You want the car to feel smarter and better cared for in daily use or before resale
If any of these apply, it is a good time to review your gearbox service parts and replace anything that is past its best, so your Porsche stays dependable and enjoyable to drive.
Explore Porsche gearbox service parts with Design911Browse gearbox service parts for Porsche models at Design911 — from individual parts to complete kits — and find options to suit everyday maintenance, upgrades and full projects.