Posted 3/24/2017 10:35 (#5919407) Subject: 15-40 engine oil in a high mileage 5.3 Chevy Suburban
Stoddard Co. SEMO
I got a 2001 suburban with around 200k miles on the engine. Do any of you guys run 15-40 diesel oil in any of your old gassers? If not what oils are you using?