Tom R - I'm with you. My dad is a 82 yr old retired farmer and a life long mechanic. Owned these trucks when they were brand new. He is helping me restore my 49' 3600. I run 10W-30 and change out every 3000 miles. I do this on all of my vehicles. I have a 75' Hurst olds that I restored, my daughter is driving my old dodge pickup with 200K miles on it with the original motor and no re-work. Use a quality oil and change it routinely and it will run just fine. Jusy my 2 cents....
Last edited by bztguy; 02/23/2011 3:30 AM.