Silkolene Castorene R40S Castor Based, Synthetic Enhanced, Racing Oil - 1 Litre

Silkolene Castorene R40S Castor Base 4T Racing Motorcycle Engine Oil 1 Litre.SILKOLENE CAS... Read full details
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Silkolene Castorene R40S Castor Base 4T Racing Motorcycle Engine Oil 1 Litre.

SILKOLENE CASTORENE R40S & R50S racing oils are castor oil based blends incorporating synthetic lubricants and additives which enhance the castor oil’s naturally
high film strength and resistance to seizure. The enhancement in the CASTORENE grades represents a significant advance in performance for lubricants containing vegetable oil. SILKOLENE CASTORENE R40S & R50S also minimises the risk of thickening and lacquer formation.

Advantages / Benefits:

  • High quality Castor base oils give outstanding oil film strength reducing wear and the likelihood of seizure.
  • Additives derived from aircraft gas turbine engine technology give stability and oxidation resistance reducing oxidative thickening and lacquer formation.Proven performance in laboratory, rig and racing tests.
  • Longer drain interval possible when compared with traditional castor-based products.


SILKOLENE CASTORENE R40S & R50S are recommended for use in both air and liquid cooled racing engines, especially speedway, running on methanol or methanol based fuels.

PLEASE NOTE: These are not detergent grades, and more frequent oil changes are required than with additive treated mineral oils.
SILKOLENE CASTORENE R40S & R50S must not be mixed with mineral oils.

Why Choose Silkolene Oils?

FUCHS Silkolene is a truly global brand sold in over 50 countries with over 30 years R&D expertise. This complete, comprehensive and evolving range has been the lubricant of choice of many championship winning teams. Our approved products are used and demanded by leading professional race teams including MotoGP, World Superbikes, British Superbikes and many more including Motocross and Karting. Developed using the latest lubricant technologies our products offer users measurable performance improvements. Use FUCHS Silkolene and you get a genuine “Oil Tune”.

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