Fuel MPG

[kdskip]

I just bought a new 2008 F250 CC 4x4 6.4L getting about 10 mpg any idea on improvements without adding a programer.

[Greenhorn Diesel]

Originally Posted by kdskip

I just bought a new 2008 F250 CC 4x4 6.4L getting about 10 mpg any idea on improvements without adding a programer.Attachment 7901

New truck.....the more miles you get on it the better...to an extent. Try to keep the RPM's at or below 2000 while cruising. Try the Ford diesel additive...either the anti-gel or the performance improver. When accelerating try not to go over 20 psi of boost. Check your tire pressures often. Watch stop lights to know if you can roll through or have to stop. I get 13-15 empty which I guess isn't too bad considering my truck. I get 8-10 towing 14k. I got a Spartan tuner now, so I will see what happens...hopefully good things. Hope this helps....

Brad

[kdskip]

Thanks for the info. Thats what I thought to, for now just keep driven and see whats happens

[n4hhe]

Don't drive it in 4x4 on the highway.

Keep a logbook, don't trust the MPG display.

Buy fuel from a different source and compare. Winter diesel and summer diesel produce much different MPG.

You say nothing about how it was being driven to produce 10 MPG. Depends on what you are towing but that might be good MPG for towing.

As a rule of thumb the most efficient HP is produced at 2,000 RPM. That doesn't say 2,000 RPM is where the best MPG can be hand. It means that is where your HP is the cheapest. Accelerate at about 2,000 RPM for best economy. Being too light footed may be producing results contrary to what you were expecting (but not 10 MPG worth).

Cruise control at 60 MPH today with two dirtbikes in back I saw 18.8 MPG on the fool computer. 15 miles of traffic lights sucked it down to 16.5.

Pulling a friend's toy hauler at 70 MPH produced 7.5 to 8.0 MPG.