Forum Discussion

ShinerBock's avatar
ShinerBock
Explorer
Oct 20, 2020

Why diesels are most efficient around 1,800 rpm

Finally got more of an answer to why all diesels are most efficient around 1,800 rpm. In comparison to what I thought, it has more to do with how diesel burns than other things like compression ratio...
Tow Vehicles
SweetLou's avatar
SweetLou
Explorer
Oct 21, 2020
Not to take away from this informative debate, but I have been curious on my 2013 6.7, the RPM in 6th seems low at 1200-1300 unloaded. Just by my ear it sounds as if it needs to be higher so I manually shift it into 5th to be around 1500-1600. Do I have an issue, and need to get something reprogrammed?

About Travel Trailer Group

44,030 PostsLatest Activity: Feb 06, 2025