Quote:
Originally Posted by Lbar
5.9 or 6.7? My brothers 6.7 6mt gets insane economy for a full size dually with a big wheel kit. Mid to high 20s with him driving like a fool half the time and not taking into account a 7" taller tire. Truck weighs 8200#s. He has two mods you don't, the electric fan conversion netted him a big gain and his tune. I can't say exactly because he doesn't check unless I force him to. But he notices when he starts getting more miles per tank after making a change.
|
I have a 6.7L engine in my truck.
As to your brother, it's unwise to say much of anything definitive about fuel economy unless one keeps careful records.