Posted 9/19/2024 09:36 (#10896163 - in reply to #10895586) Subject: RE: Have fan several 6.2s in last 10 years. 87 octane almost exclusively.
East Central Kansas
All max tow. The last one was a 2022. If it reduced power, I didn't notice, would do 0-60 in approximately 6 seconds, had mo trouble attain 55 mph up fairly steep hills towing loads exceeding rated
Tried several successive tanks of 89 and 91 octane in most recent one, no noticeable difference in mpg or performance
GM 6.2 Premium Fuel?
