2007 Chevrolet Silverado 2500 HD Q&A
2007 Chevrolet Silverado 2500 HD Question: how can I get a better mileage.
Check that the air filter is not restricted. TIre pressures are important, even tire make/manufacturer can affect fuel mileage. Driving habits and loads affect fuel mpg. If all else fails to get you better mileage I wonder if the fuel injectors or fuel pump have a problem. Any Black Smoke form the exhaust signifying excessively rich running conditions? - patrick mannion
I second Patrick's answer. I'd also add that diesel fuel quality is also could be an issue. Try to change your regular gas station and see if it will positively changes the results. Zee - ZeeTech
I started adding Lucas oil treament to my 04 and I stared getting 2 to 3 miles more per gal. Gerald - geraldbur