Hammermechanicman
Lawn Addict
- Joined
- Jan 10, 2020
- Threads
- 65
- Messages
- 3,815
I wonder how many guys here are old enough to remember working on engines before detergent oils? Friend of mine decided to run 10w 40 Castrol racing oil because he thought it was the best. Only difference was the racing oil wasn't detergent. In 3k miles engine sludge up and clogged oil passages and trashed the engine.