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Silkolene Castorene 4T Engine Oil

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Silkolene Castorene 4T Motor Oil


  • A Castor and ester synthetic blend for specialist racing applications
  • This blended combination enhances the naturally high film strength of Castor while reducing normal oil thickening and lacquer build-up
  • Only R40S can be premixed with methanol fuels
  • Castorene oils must not be mixed with other oils
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Silkolene Castorene 4T Engine Oil
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Product Style RevZilla Item # Manufacturer Product # Availability
R40S / 1 Liter 166733 80079900478 In Stock: Ships next business day