Forum Discussion
The_Mad_Norsky
Nov 07, 2012Explorer
Ram4Sam wrote:Sport45 wrote:which truck is working harder and using less fuel??
At the same speed, the trucks are working equally as hard.
The diesel is most likely using less fuel.
That right there pretty much sums up the last 188 pages of this thread.....
Sam
:h Good comments above, and, for the most part, I agree.
But about the working equally as hard part.
Would it be safe to assume that the engine running at lower throttle settings (RPM's) AND at a lower percentage point of it's red line limits be the engine that was working the least???
Say two engines here, diesel and gas, all factors discussed here being equal:
GAS running up the hill at 5200 RPM'S, red lines at 6200 RPM's so it is running at 84% (rounded) of its capacity.
DIESEL running up the hill at 2200 RPM's, red lines at 3200 RPM's so it is running at 69% (rounded) of its capacity.
Thoughts????? (note: my RPM figures are fictional, not based on any engines that I know of, just used here as an example for clarification).
About Travel Trailer Group
44,068 PostsLatest Activity: Jun 10, 2026