Thread: Royal Purple 20w50 oil

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What cam do you have in the car? mechanical or roller? if mechanical then go with Gibbs' (my favorite) or Brad Penns' because they have the lead/zinc additves for mechanical cams; if you have modern roller put whatever tickles your fancy, 50w sounds ok to me if you have carburated motor but if you have modern injected motor the heavy weight oil may squew the temps and the 'putor might do some odd stuff - i am not sayin that it will, it is just a thought.

I've got the Comp Thumper Cam Hydraulic, with a 479 lift, aluminum roller rockers, with Brodix 1K180 64cc Aluminum heads. I also have the Edelbrock performer manifold with the 600 cfm Edelbrock carb. This is all new to me, since I purchased the rod and motor, already finished. It's like - - - going back a few steps, and hiking the ball all over again !