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Castrol Oil Castrol is the world leading manufacturer, distributor and marketer of premium lubricating oils, greases and related services to automotive, industrial, marine, aviation, oil exploration and production customers across the world.

Castrol EDGE 0W-40 A3/B4 SN 5 Liter


Castrol EDGE 0W-40 A3/B4 Is a full synthetic engine oil formulated for prestige and high performance engines in both petrol and diesel passenger* and light commercial vehicles, naturally aspirated or turbocharged.

Castrol EDGE 0W-40 A3/B4 gives you the confidence to demand maximum engine performance from today’s prestige and high performance vehicles requiring lower viscosity higher performance oils. Castrol EDGE 0W-40 A3/B4 is proven in tests to deliver outstanding oil strength.

The exceptional characteristics of Castrol EDGE 0W-40 A3/B4 ensure that all engine components, from the valve train to the bearings are fully lubricated to provide optimum engine performance and protection.

Castrol EDGE is tested to its limits. Read more here.


Castrol EDGE 0W-40 A3/B4 provides outstanding wear protection in performance engines designed to run at their optimum level on lower viscosity oils. Castrol EDGE 0W-40 A3/B4 should be used in engines where maximum efficiency and protection is demanded.

* Excludes diesel passenger vehicles fitted with Diesel Particulate Filters (DPF).


Castrol EDGE 0W-40 A3/B4 containing Titanium Fluid Strength Technology™ which:

Delivers excellent levels of protection across a variety of driving conditions and temperatures.

Helps engines run cooler, contributing to longer engine life and reduces engine deposits to help maximise engine response.

Is extreme tested to deliver maximum horsepower up to 40% longer than other synthetic oils.

Superior thermal stability ensures minimal breakdown in formulation and minimal engine deposits for cleaner engine internals and ultimate engine protection.

Engineered to minimise oil consumption, ensuring the maximum potential is available from the oil throughout the service interval.

Excellent light duty diesel engine performance; suits modern direct injection engines without DPF.

Castrol EDGE 0W-40 A3/B4 exceeds many current lubricant performance standards and exceeds the most demanding European, American and Japanese service requirements. Castrol EDGE 0W-40 A3/B4 is approved by the majority of motor manufacturers that have systematic testing and approval regimes.


Meets or exceeds industry specifications: 

American Petroleum Institute (API) Service Classification 

• Petrol : SN, (SM, SL, SJ, SH and all superseded classifications)

• Diesel : CF

ACEA A3/B4 High performance shear stable petrol/diesel engine oil

BMW Longlife – 01

VW 502 00/ 505 00

MB-Approval 229.3/ 229.5

Porsche A40