Solutions for better fuel economy? (From simple to drastic)

50??? i dont think very many drivers would want to go 20 mph UNDER speed limit.

 

See if your boss has a laptop and cable to hook it up to the truck and check the ECM MPG. Check it monthly and see your progress. This is not an exact number, it usually runs about .5 MPG higher than what you're actually getting.

 

You will see big improvements in MGP if you slow down. According to Peterbilt a truck needs about 70hp to overcome aerodynamic drag at 50mph. At 70mph the same truck needs 180hp to overcome aerodynamic drag. At 80mph you need almost 300hp to overcome aero drag. The sweet-spot for truck aerodynamics is around 50-55mph, going faster and will burn much more fuel and going slower won't save you much fuel as aerodynamics aren't that important at slower speeds.

 

If you have an Android phone download Fuel log and watch your mpgs, then compare your driving habits.

 

ahhhhh i fill my tanks and do my own math dont trust the dashboard reading on mpg
I always have extra shower credits and never smell
i don't understand that by filling up you dont get enuf credits unless you dont run enough miles to fuel up daily so top it off once then top it off everytime atround 50 gal you can still check your mpg

 

I agree, but for all this to play out the right way, the truck has to have the right gearing to take advantage of the slower speed. You could run into a situation where you are lugging in one gear, or the engine is screaming in another. Both of which are not very fuel efficient or good for your engine and drive train. You have to find the right balance depending on what gearing is in the truck. Only way to make everything work out exactly like it should is to spec out a truck to match exactly what you are doing. Otherwise, you have to compromise a little. You may not be able to run 55, but you could get by with 58 or 60 or even 62. You will just have to play with it and tweak out where the truck performs well at a lower speed. There is no "one size fits all" solution.

 

Buy 1/2 your fuel shut the pump off restart and finish filling. 2 showers, full tanks. I do it all the time if I'm gonna need an extra shower and not going to need to fuel.