loveracing1988
Senior Member
- Joined
- Jul 4, 2013
- Posts
- 3,505
- Reaction score
- 913
- Location
- Clarkston, MI
- Ram Year
- 2020
- Engine
- 6.7 Cummins
The 5.7 has always had 89 recommend and 87 required.My 2011 Ram 1500 with the 5.7L owner's manual recommended 89 octane. My 2015 Ram 3500 with the 6.4L owner's manual recommends 89 octane as well.