Diesel Pusher Gas Mileage

[Larry N.]

That's where I'm not so sure...with DP's and large-profile motorhomes, I think wind resistance is as big a factor as driving style.

That's certainly true, but weight plays a big part in stop and go driving, little in level ground cruising on the highway with light or calm wind.

 

[Ray-IN]

Skookum, this Caterpillar pdf should clear things up: https://www.rvtechlibrary.com/engine/Cat_RV_Performance.pdf

 

[Utclmjmpr]

Cats are in a different league,, they snarl and screem a lot but the result is a scratch rather than a real bite and pull..>>>Dan

 

[BobKones]

36 feet Cummins ISC 315
8 to 10 MPG. More to the 10 side.

 

[CityGuy]

36', nine-foot-wide, 13' tall, 33,000 lb Class A with the 5.9 rail injected, 300 hp Cummins/Allison 5: Recently saw a prolonged 10.0 to 10.3 on the ScanGauge while towing a Malibu at about 53 mpg, flat road, still wind -- but the average is usually 6.8 to 7.2. Have some evidence that tire pressure makes an observable difference.

 

[Larry N.]

Have some evidence that tire pressure makes an observable difference.

Yes, but that also needs to be balance against handling. Overinflation can cause dangerous handling in some situations.

 

[CityGuy]

Yes, but that also needs to be balance against handling. Overinflation can cause dangerous handling in some situations.

I don't overinflate. Know better. I am a little susceptible to running low, however, especially with the overnight 20 to 25-degree temperature drops down here. Not so much so since I installed a TPM.

 

[Edd505]

Diesel Pusher Gas Mileage?​

Just for info the diesel pusher will use diesel and will get fuel mileage. They get zero gas mileage as the don't use gas, maybe in a generator.