Originally Posted by stangs400
Well the shuddering that I have been having is not the transmission. My mechanic thinks it something to do with the injectors. Hes not a diesel mechanic so hes not to sure. But I was also thinking the ICP sensor? The truck is an 06' with 63k miles, just wondering if this would be covered under the engine warranty? Could this also be why I am seeing only 11.6- 12.3 mpg, completely empty, babied throttle?
with 3.73's empty in town should be 14.5 and highway +17 depending on speed. in my truck, 55= +22, 60= 22, 65= 19, 75= 17. Thats un moded 100% with mobil 1 delvac 100% synthetic motor oil. Mentioned the oil cause immediately after switching over to the M1D Syn my mileage jumped up 1,2 mpg. Before the syn I never saw over 20mpg, hardly ever even 19. My results are based upon the same 450 mile stretch of highway and with the cruise control engaged.