Question about oils/fuel for '42 WLA
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Tourer
Joined: May 2008
Posts: 442
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From: High Desert of So Cal
Question about oils/fuel for '42 WLA
Well my new '42 flathead is here and I want to perform all the usual oil changes and etc. Can I use synthetic or should I stick with dino? Will 20w50 be ok? My manual (a dept of defense reprint) says I should use at least 72 octane fuel (wow). Will the higher octanes of modern fuels be a problem? Should I add some sort of lead substitute to the fuel?
thanks for any and all replies.
thanks for any and all replies.
Ultimate HDF Member
Joined: Dec 2007
Posts: 9,254
Likes: 283
From: Lake City, Florida (Native)
I would get in touch with a good Oil Rep ... think could be critical what you pick and choose although 20W50 Dino seems within Reason .. I would try unleaded 87 Regular for gas .. Amoco proved in the 50's that Vehicles didn't need lead in fuel to run properly..
Road Master
Joined: Jun 2008
Posts: 1,078
Likes: 39
From: NW Florida
It wouldn't hurt to use the lead substitute. I use it in all of mine that still have the original valve seats. Depending on the temperature I would use straight 50 or 60 weight oil but thats just my opinion. The higher octane shouldn't be a problem. Post some pictures of your new ride.
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Feb 10, 2019 09:20 PM
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