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Jack E/NJ · 01-25-2016, 10:17 PM

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>>>Is 5 w 30 to thin for a 36 flathead?>>>

I've only used Motorcraft 5w-20 synblend since rebuilding my 21-studder 6 years ago. So 5-30 might be a bit too thick when it's hot. 8^)

Jack E/NJ

01-25-2016, 10:17 PM	#6
Jack E/NJ Senior Member Join Date: May 2010 Posts: 2,259	Re: oil Sponsored Links (Register now to hide all advertisements) >>>Is 5 w 30 to thin for a 36 flathead?>>> I've only used Motorcraft 5w-20 synblend since rebuilding my 21-studder 6 years ago. So 5-30 might be a bit too thick when it's hot. 8^) Jack E/NJ