Replaces Castrol Formula RS 10W-60 Race proven for highly stressed and competition engines, as well as modified older vehicles Product Features Delivers race proven power and performance Provides strength in reserve at extremes of performance Stays in grade Product Benefits The best protection for older modified vehicles Allows you to tune engine to the maximum Provides protection when running fast, hot or hard Technical Specifications ACEA A3/B3/B4 API SL/CF Available in 1 litre and 4 litre packs