stewart pickles Posted May 2, 2012 Posted May 2, 2012 i used castrol gps,we once had a load of clutch slip on andys car (cat motorsport) at cadwell we changed the steels, plates and springs and still had slip. we put the car on the trailer and took it home and had a chat with jack at holeshot he said it was the oil (think it was putolene but it was a few years ago ) jack told us to use castrol gps,we did this and put the old parts back in and the clutch was fine the rest of that season gps is now called power 1 racing 4t 10/40 and thats whats going in my 1000rr motor if i ever get it finished Quote
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