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Gearbox / Differential Oil
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:
Porsche Gearbox & Differential Oil | Precision Lubrication for Performance and Longevity
Gearbox and differential oils are essential lubricants that protect your Porsche’s transmission and driveline components from friction, heat, and wear. These specially formulated oils ensure smooth gear shifts, consistent torque delivery, and optimal performance across both manual and automatic transmissions.
At Design911, we supply premium gearbox and differential oils developed to meet or exceed the required performance standards for viscosity, temperature stability, and protection. Available in a range of high-performance synthetic and mineral-based formulations, our oils provide superior protection for both road and track-driven vehicles.
Whether you’re maintaining a classic 911 or servicing a modern PDK transmission, our gearbox and diff oils deliver precision lubrication, reduced wear, and lasting reliability.
What Does Gearbox & Differential Oil Do?
Gearbox and differential oil plays a critical role in maintaining smooth power transfer and protecting your Porsche’s internal transmission components.
Core Functions:
- Reduces friction and wear between gears and bearings.
- Provides heat dissipation during prolonged driving or high loads.
- Prevents corrosion and metal fatigue under extreme conditions.
- Ensures smooth gear engagement and quiet operation.
- Maintains consistent performance over wide temperature ranges.
Without proper lubrication, gear surfaces can wear rapidly, leading to noisy operation, gear slippage, or even catastrophic transmission damage.
Why Does Gearbox & Differential Oil Degrade or Fail?
Like engine oil, gearbox and differential lubricants degrade over time due to contamination, heat cycles, and age. When performance breaks down, the risk of component wear and failure increases.
Common Causes of Oil Degradation Include:
- Contamination from metal particles or moisture ingress.
- Breakdown of viscosity from extreme temperature exposure.
- Oxidation reducing the oil’s protective film.
- Incorrect oil grade or insufficient fluid level.
- Neglected servicing intervals in high-performance use.
As the oil’s lubricating properties diminish, it loses its ability to protect critical components — leading to excessive wear, bearing noise, or transmission failure.
Why Replace Your Porsche Gearbox & Differential Oil?
Regularly replacing your gearbox and differential oil is one of the most effective ways to preserve drivetrain integrity and performance. Using high-quality lubricants ensures smoother gear changes, improved efficiency, and longer component life.
Key Benefits:
- Restores smooth gear engagement and quiet operation.
- Extends gearbox and differential lifespan.
- Prevents excessive wear, heat build-up, and corrosion.
- Optimises performance under high torque or track conditions.
- Available in performance synthetic and high-temperature formulas.
- Suitable for manual, automatic, and PDK Porsche transmissions.
Regular oil changes — typically every 30,000 to 60,000 miles depending on driving style — are vital to keeping your gearbox and differential performing at their best.
Highlights
- Premium Porsche gearbox and differential oils.
- High-temperature and anti-wear protection formulas.
- Designed for both standard and high-performance drivetrains.
- Reduces noise, friction, and metal-to-metal contact.
- Suitable for Porsche 911, Cayman, Boxster, Panamera, and more.
- Essential for servicing, restoration, and performance upgrades.
