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J Franklin · 01-26-2021, 04:51 PM

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use a 10-30 or 10-40 that is all you need unless the engine is worn out. Zinc won't hurt anything.

01-26-2021, 04:51 PM	#6
J Franklin Senior Member Join Date: May 2010 Location: Oregon Posts: 5,959	Re: Engine Oil Sponsored Links (Register now to hide all advertisements) use a 10-30 or 10-40 that is all you need unless the engine is worn out. Zinc won't hurt anything.