View Single Post
Old 10-10-2023, 10:08 AM   #5
Bill OH
Senior Member
 
Join Date: May 2010
Posts: 435
Default Re: 1937 model 74 blowing the blues

I purchased a 221 in 1950 - burned oil as you describe. I ran detergent oil and it cleared the problem. I also cleaned 3/4 inch of sludge out of the pan. I could always depend on 86 mph and even hit 92 once. Never replaced rings or bearings.
Bill OH is offline   Reply With Quote