I'm told that a 12 valve Cummins can get incredible mileage if the right bolt-on toys are installed. Is that true?
What kind of mileage is possible? What mods have to be done? Sure appreciate any insight.
Ben
I'm told that a 12 valve Cummins can get incredible mileage if the right bolt-on toys are installed. Is that true?
What kind of mileage is possible? What mods have to be done? Sure appreciate any insight.
Ben
if you want the best mileage, you want a stock truck.
simply put....."more power means more fuel burned"
I've heard reports of 25mpg although I've never owned a 12v truck myself.
"Chris Thompson" wrote
And then, there's such things as not voiding your warranty.
Steve
given the age of a 12v i doubt there's any warranty left on them.
Isn't the 12 valve Cummins well beyond the warranty?
Plenty of claims out there from fuel additives (Stanadyne and others), tuners (Diablo Sport Predator and others), timers, tire pressure, etc... Of course one of the better ways to improve milage is driving it with the provobial egg on the fuel pedal or just keeping boost under 10#.
Go to
FMB (North Mexico with my '03 CTD HO)
Some may disagree with me but some of those old 12 valve Cummins where the sturdiest and most reliable ones used in a P/U. They were low tech and not much to go wrong with them and were conservatively rated too which equalled a very long service life. Some of those old motors got some respecable MPG too in stock form.
----------------- TheSnoMan.com
Gas mileage in a Diesel? sorry....
Also, its been well documented that some of the power add ons to the Cummins, regardless of engine evolution, improve mpg. While the "more power equals more fuel" axiom is true, efficiency plays a part. Diesels are able to change fuel curves, so different fueling affects mpg, many times in a positive way.
My stock 89 12 Valve, no intercooler, 354 rear, 5 spd Getrag gets over
22 MPG. And thats with almost 300K on it.MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.