oregon101
Full Access Member
The 93 crew cab I recently bought has a tired motor and I need advice on options. It has 355k on it, compression ranging from 280-320, and is burning a quart of oil every 100 miles. I have used Mobil Delvac, Delo and am currently using Mystik with no change in oil consumption. It still runs and drives well but pours out the gray smoke when under a load! I am considering trying an Auto RX treatment or having the engine rebuilt. Any other suggestions?