CM2350 rpm range

[Jorg81]

(06-26-2018 )iceman Wrote:  https://www.youtube.com/watch?v=afQb7UH5koE&t=308s
For those that haven't seen it around the 3 to 4 minute mark in the video. Excellent conversion on how to make the engine last yet get the fuel mileage.

I guess I don’t understand the fuel mileage part of this. I used to run slower at lower RPMs in my cM 2350 @55 mph and 12-1300 rpm and I got decent fuel mileage. Now I run fast because of the job I’m doing needs me to @ above 1500 rpms and I get terrible fuel mileage? Do you have to run slower at higher RPMs in a lower gear or something to get good fuel mileage?