Cheapstreetduster
Junior Member
So 2019 ram cummins 2500 diesel .
I put 1gal. Of gasoline in my tank then topped off with 28 gal of diesel. On a long trip that would require multiple fuel fills. I got a 4 mpg increase in milage and truck runs , better.
Start of trip i topped off def. Filled the tank with diesel. ( no gasoline this time as normal) And set out.
I am towing a small car on an open trailer. Its averaging 39* outside
Truck saw 13.4 mpg average with cruise set at 77 mph.
First fuel stop on empty tank, i put 1gal of super gasoline in the fuel tank. Then topped off with diesel (30 gal tank)
The trucks average climbed and climbed this whole jaunt. At the end of the tank my average went up to 16.2 .
Repeated the same ordeal 1gal gas. 28 gal. Fuel on this fill up. The average mpg went to 17.3.
Upon my arrival I disconnected the trailer for one day of short trip driving. Truck is noticeably crisper throttle. With boost the truck pulls a little better.
I am returning soon with trailer but w/o the car.( empty trailer) I will continue to do this on the return trip.
I have seen roughly an additional 120 miles per tank.
I put 1gal. Of gasoline in my tank then topped off with 28 gal of diesel. On a long trip that would require multiple fuel fills. I got a 4 mpg increase in milage and truck runs , better.
Start of trip i topped off def. Filled the tank with diesel. ( no gasoline this time as normal) And set out.
I am towing a small car on an open trailer. Its averaging 39* outside
Truck saw 13.4 mpg average with cruise set at 77 mph.
First fuel stop on empty tank, i put 1gal of super gasoline in the fuel tank. Then topped off with diesel (30 gal tank)
The trucks average climbed and climbed this whole jaunt. At the end of the tank my average went up to 16.2 .
Repeated the same ordeal 1gal gas. 28 gal. Fuel on this fill up. The average mpg went to 17.3.
Upon my arrival I disconnected the trailer for one day of short trip driving. Truck is noticeably crisper throttle. With boost the truck pulls a little better.
I am returning soon with trailer but w/o the car.( empty trailer) I will continue to do this on the return trip.
I have seen roughly an additional 120 miles per tank.