Posted by Colby in SW OR on Monday, January 07, 2002 at 10:22PM :
In Reply to: 20-50 Oil in my 230 ci Flathead? posted by J-Gilly on Monday, January 07, 2002 at 6:19PM :
I would recommend using a straight 30w oil instead. The 20w-50 is too heavy unless the engine is really worn out. Detergent or non is no big deal as long as you change it regularly.