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

Mart · 06-29-2013, 06:29 PM

Don't overthink it. Just put in a good quality oil and change it regularly. You don't have a filter so you're not going to try and get 100,000 miles out of it before an oil change. Personally I use a 20w50 or 15W40 but whatever you use you will be changing it soon so don't worry.

06-29-2013, 06:29 PM	#4
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 8,750	Re: What should I use for oil in 40 Ford flathead? Don't overthink it. Just put in a good quality oil and change it regularly. You don't have a filter so you're not going to try and get 100,000 miles out of it before an oil change. Personally I use a 20w50 or 15W40 but whatever you use you will be changing it soon so don't worry.