Re: What should I use for oil in 40 Ford flathead?
Changing your oil that frequently you might as well use the cheapest you can find. I use NAPA's straight S.A.E. 40 in the summer and 10W-30 in the winter.
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Prof. Henry (The Roaming Gnome) 
"It is good to have an end to journey toward; but it is the journey that matters, in the end.” *Ursula K. Le Guin in The Left Hand of Darkness
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