The Ford Barn - View Single Post - Sea-Foam

Purdy Swoft · 01-31-2020, 12:43 PM

I run four ounces of Marvel mystery oil per each ten gallons of gas . I have sometimes added a bit of marvel oil to the crankcase with no problem . I run 20 W 50 detergent oil in my model A engines with good results .

01-31-2020, 12:43 PM	#8
Purdy Swoft Senior Member Join Date: May 2010 Location: Alabama Posts: 8,099	Re: Sea-Foam I run four ounces of Marvel mystery oil per each ten gallons of gas . I have sometimes added a bit of marvel oil to the crankcase with no problem . I run 20 W 50 detergent oil in my model A engines with good results .