Engine Oil

Multi pack 2 x 5L Bottles
Mobil 1 0W-40 is recommended for all types of modern vehicles, especially high-performance turbo-charged, supercharged gasoline and diesel multi-valve fuel injected engines found in passenger cars, SUVs, light vans and trucks.
Mobil 1 0W-40 is especially suitable for extreme conditions, where conventional oil often cannot perform.
Mobil is not recommended for 2-Cycle or aviation engines, unless specifically approved by the manufacturer.
Everything you need to know about oil please see
Porsche Oils overview
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OIL00004
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This kit is comprised of the following items:

Multi pack 3 x 5L Bottles
Mobil 1 0W-40 is recommended for all types of modern vehicles, especially high-performance turbo-charged, supercharged gasoline and diesel multi-valve fuel injected engines found in passenger cars, SUVs, light vans and trucks.
Mobil 1 0W-40 is especially suitable for extreme conditions, where conventional oil often cannot perform.
Mobil is not recommended for 2-Cycle or aviation engines, unless specifically approved by the manufacturer.
Everything you need to know about oil please see:
Porsche Oils overview
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
OIL00004
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This kit is comprised of the following items:

5ltr Tin
CASTROL GTX CLASSIC 10W/40
Liquid Engineering from Castrol Classic Oils - the original is back.
Brought to you by Castrol Classic oils, Castrol GTX Classic 10w/40 is a high quality mineral engine oil for vehicles from 1978 to 1993. Produced to original formulation as specified in motor manufacturers’ vehicle handbooks. Containing anti-wear and anti-corrosion additives to provide high levels of protection necessary for older technology vehicles.
Castrol GTX Classic protects classic engines against problems like sludge, helping to extend the life of your mechanicals. With GTX Classic in your engine, there’s a great road ahead.
Castrol GTX Classic 10w/40, the original ‘Liquid Engineering’ for younger and modern classics:
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1928G
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1 Gallon (4.54 Ltr) Tin
CLASSIC XL 20w/50
Castrol Classic XL20w/50 is a premium multigrade engine oil of good all round performance. Formulated with high quality mineral oils, plus carefully selected additives, it is ideally suited to older technology and classic car engines.
- For pre-1980 classic cars and motorcycles
- A conventional 20W-50 multigrade engine oil
- Formulated with high quality mineral oils plus selected additives
- Ideally suited to older technology and classic car engines
- Offers excellent oil consumption and a very high level of engine wear protection
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1925
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1ltr Tin
CLASSIC XL 20w/50
Castrol Classic XL20w/50 is a premium multigrade engine oil of good all round performance. Formulated with high quality mineral oils, plus carefully selected additives, it is ideally suited to older technology and classic car engines.
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19257176
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20ltr Plastic container
CLASSIC XL 20w/50
Castrol Classic XL20w/50 is a premium multigrade engine oil of good all round performance. Formulated with high quality mineral oils, plus carefully selected additives, it is ideally suited to older technology and classic car engines.
- For pre-1980 classic cars and motorcycles
- A conventional 20W-50 multigrade engine oil
- Formulated with high quality mineral oils plus selected additives
- Ideally suited to older technology and classic car engines
- Offers excellent oil consumption and a very high level of engine wear protection
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19252801
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Classic Pump Oil Can - 200ml
The classic Castrol oil applicator. Pump action screw top cans supplied with exchangeable fixed and flexible applicators.
These period style oil cans are great for lubricating hard to reach places
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J120
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Classic Pouring Jugs
For accurate measurement of lubricants in imperial volumes as shown in the vehicle handbook.
Available in -
These handy metal pouring jugs not only look good in your garage but are useful too.
Aluminium Oil Dipstick Wipers
Colour: Silver
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911680400003
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Advanced Synthetic Technology Engine Oil

5 Litre Bottle
Fits:
Porsche 991 GT3 / GT3 RS / Cup
Porsche 991 R
Porsche 991 Speedster
Porsche 992 GT3 / GT3 RS / Cup
Porsche 992 R
Porsche 992 Speedster
Porsche 992 S/T
Porsche 718 Cayman GT4 RS
Porsche 718 Boxster Spyder RS
Please Note
Mobil 1 C40 GT 0W-40 is not suitable for Porsche vehicles requiring an A40, C20, C30 or C40 approved Mobil 1 engine oils.
Mobil 1™ C40 GT 0W-40 is an advanced synthetic technology engine oil specifically engineered for high performing Porsche GT Engines. Mobil 1 C40 GT 0W-40 has been designed to protect the engine from wear in extreme conditions and prevents deposits and sludge formation. It is the latest technology developed within the framework of the collaboration established with Porsche AG for over the last 25 years.
Features and Benefits
Mobil 1 C40 GT 0W-40 is made with a proprietary blend of leading edge components formulated to be fully compatible with Porsche GT engines. Mobil 1™ C40 GT 0W-40 has been designed to help deliver outstanding performance and protection in extreme conditions. It is distinguishable by its unique green colour.
Active cleaning agents
Contributes to deliver outstanding engine cleanliness and sludge control
Outstanding high-temperature thermal and oxidation stability
Helps to reduce oil aging for protection throughout your oil drain interval
High temperature oil film resistance
Contributes to outstanding wear protection
Enhanced frictional properties
Helps improve fuel economy
This product has the following approvals: Porsche C40 GT
Grade: SAE 0W-40
Density @ 15 C, g/ml, ASTM D1298: 0.846
Kinematic Viscosity @ 100 C, mm2/s, ASTM D445: 13.8
Kinematic Viscosity @ 40 C, mm2/s, ASTM D445: 72
Viscosity Index, ASTM D2270: 199
Hi-Temp Hi-Shear Viscosity @ 150 C 1x10(6) sec(-1), mPa.s, ASTM D4683: 3.8
Pour Point, °C, ASTM D97: -48
Flash Point, Cleveland Open Cup, °C, DIN EN ISO 2592: 23

1 Litre Bottle
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00004330521
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1 Litre Bottle
Mobil 1 0W-40 is recommended for all types of modern vehicles, especially high-performance turbo-charged, supercharged gasoline and diesel multi-valve fuel injected engines found in passenger cars, SUVs, light vans and trucks.
Mobil 1 0W-40 is especially suitable for extreme conditions, where conventional oil often cannot perform.
Mobil is not recommended for 2-Cycle or aviation engines, unless specifically approved by the manufacturer.
Everything you need to know about oil please see:
Porsche Oils overview
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157296
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20 Litre Bottle
Mobil 1 0W-40 is recommended for all types of modern vehicles, especially high-performance turbo-charged, supercharged gasoline and diesel multi-valve fuel injected engines found in passenger cars, SUVs, light vans and trucks.
Mobil 1 0W-40 is especially suitable for extreme conditions, where conventional oil often cannot perform.
Mobil is not recommended for 2-Cycle or aviation engines, unless specifically approved by the manufacturer.
Everything you need to know about oil please see:
Porsche Oils overview
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157719
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5 Litre Bottle
Mobil 1 0W-40 is recommended for all types of modern vehicles, especially high-performance turbo-charged, supercharged gasoline and diesel multi-valve fuel injected engines found in passenger cars, SUVs, light vans and trucks.
Mobil 1 0W-40 is especially suitable for extreme conditions, where conventional oil often cannot perform.
Mobil is not recommended for 2-Cycle or aviation engines, unless specifically approved by the manufacturer.
Everything you need to know about oil please see:
Porsche Oils overview
Related reference numbers
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157717
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5 Litre Bottle
Mobil 1 0W-20 provides the high-temperature protection of higher viscosity oils while offering the best fuel economy in the Mobil 1 line.
Helps improve fuel economy based on 0.2-2.3% potential fuel economy improvement obtained by switching from higher viscosity oils to a 0W-20 grade. Actual savings are dependent upon vehicle/engine type, outside temperature, driving conditions and your current engine oil viscosity
Excellent overall lubrication and wear protection performance for many driving styles and conditions, from mild to severe, where a 5W-20 or 0W-20 is recommended
Everything you need to know about oil please see:
Porsche Oils overview
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Premium Engine Oil for Cooling, Protection & High-Performance Efficiency
Engine oil plays a crucial role not only in lubrication, but also in controlling engine temperature, reducing friction and protecting vital internal components. High-performance oils are engineered to withstand the intense heat and stress generated by modern engines—especially in performance and motorsport applications. Whether driving daily, touring, or taking your car on the track, using the correct engine oil ensures efficient cooling, reliable lubrication and long-term engine durability.
A well-maintained oil system helps the engine run cooler, smoother and more efficiently, preventing heat-related failures and maintaining performance integrity.
What Engine Oil Does
Engine oil performs several vital roles within the cooling
and lubrication system:
- Reduces
friction between moving engine components
- Carries
heat away from pistons, bearings, cylinder walls and the crankshaft
- Maintains
stable oil pressure for consistent lubrication
- Prevents
metal-on-metal contact, reducing wear and extending engine life
- Minimises
sludge and deposit formation through detergents and additives
- Supports
turbocharger longevity by cooling and lubricating the turbo core
- Improves fuel efficiency through reduced mechanical drag
High-quality oil is essential for all engines, especially high-revving, turbocharged or air-cooled engines that rely heavily on oil for cooling.
Why Engine Oil Breaks Down or Fails
Engine oil degrades over time due to heat, contamination and
mechanical stress. Common causes of oil failure include:
- Thermal
breakdown from extreme operating temperatures
- Oxidation,
causing sludge and varnish deposits
- Fuel
dilution, reducing viscosity and protection
- Contamination
from debris, blow-by gases or moisture
- Shear
breakdown reducing oil’s ability to maintain pressure
- Old
or incorrect oil grades, unable to meet engine demands
- Extended service intervals leading to depleted additives
Symptoms include increased engine noise, rising temperatures, low oil pressure warnings, rough running or visible oil darkening and thickening.
Why You Should Replace Your Engine Oil Regularly
Replacing worn or degraded oil with high-quality, precision-formulated lubricants ensures optimal cooling, performance and engine protection.
Benefits include:
- Improved cooling efficiency and heat management
- Reduced internal wear and longer engine lifespan
- Stable oil pressure and consistent lubrication
- Enhanced performance for turbocharged or high-output engines
- Cleaner internals with reduced sludge and carbon buildup
- Better throttle response and smoother running
- Protection under track, towing or spirited driving conditions
Fresh oil is one of the simplest yet most vital maintenance steps to keep your engine safe and performing at its best.