I have a friend who has a 70 or 80's model Isuzu I-Mark with a turbo charged diesel engine. He gets aobut 45 miles per gallon and more power using water injection. with it off, he gets about 35 and has to down shift going up a hill. WTF is going on?
On a side note, I have a 1984 Lincoln Continental Mark VII with a BMW Turbo Diesel, 2.4 liter, I routinely get about 45 miles to a gallon, granted the car is a piece of doodoo.
Again I ask, WTF is going on?
I do love my CRD though, has anyone looked at water injection? I do know that they used to use it on airplanes during WWII.

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Harlan in Austin
2005 Jeep Liberty Sport CRD: Samco, No Muffller, EGR removed, Mechanical Fan Back On, Rancho RS5k's, Self Installed Rockers, Lifters, Engine Mounts, and Timing Belt, CCV to Airbox Mod, Hacked RB1, CD-Changer, AuxInput; 2005 PowerStroke Excursion 6.0: Rancho 9k's, SuperChipped, Stock otherwise. BioDiesel Maker.