Quote:
Originally Posted by lijiahua790
Hahaha I just got royal purple 5W40, actually thinking of 10w40 for the next oil change, but I'm concerning the heavy load on the oil pump and potentially cause it to fail
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The higher the viscosity the better the protection.
There are plenty of people running gear oil to get maximum lubrication. Something like an 80w-250 will ensure your engine will get to 1,000,000 miles.
If you're running an N20 with a tune, downpipe, etc. you should consider this.