The Ford Barn - View Single Post - What should I use for oil in 40 Ford flathead?

Walt Dupont--Me. · 06-29-2013, 09:10 PM

I use 15-40 Rotella I don't know what all those no. means on the container but you will find one of the no. it's usually the 2nd no. ( Cl-4) that stands for zinc. Walt

06-29-2013, 09:10 PM	#12
Walt Dupont--Me. Senior Member Join Date: May 2010 Location: Gardiner Me. Posts: 4,200	Re: What should I use for oil in 40 Ford flathead? I use 15-40 Rotella I don't know what all those no. means on the container but you will find one of the no. it's usually the 2nd no. ( Cl-4) that stands for zinc. Walt