20/50 was favourite for everything a hundred years ago.Autodata says anything fom 5/30 to 20/40 depending on temp for that engine, I would say 20/40 if you can get it, if not get the thickest and add something like Wynns and I take it the oil pressure is ok.
And what Vern says makes sense.
Can be done with head on but not worth aggro in not smokey.
Last edited by flyerncle : 8th July 2010 at 08:31 PM.
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