Mobil 1 0w-40 vs GC 0w-30

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Originally Posted By: Torrid
Originally Posted By: 98LSC32V
Thanks for the advice guys. The car has a fairly aggressive cam in it with dual 650 lift valvesprings. I was also thinking of running redline 5w-20. Any thoughts?


Why 5w-20? I know that their HTHS is high for each grade but I would still use the 5w30. Not much reason to go heavier than that with their offerings though. I have thought of trying Redline myself.


HTHS of a 30 weight, light 20 weight oil for drag racing.
 
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