Took the plunge - Cummins to Hemi 6.4
After reading posts, reviews, specs, watching videos, and a few test drives, I finally decided to take the plunge. I sold my 2003 Ram 2500 QC LB 4x4 Standard output 5.9 Cummins 5 speed and bought a ne...
Forum Discussion
You are correct. the 6.4 only requires 87 octane. I have a tank of 89 octane in mine now and will be towing tomorrow with it. I'm curious to see if it helps any, i have read elsewhere that while towing, the higher octane is beneficial.
