what are the best fuel additives, oils and that type of stuff i could use for better mileage, and to make the truck last a little longer? this is my first diesel so im not sure what is best.
Thats exactly what I use!These type of threads usually spawn e-riots but, I will tell you what I use:
Fuel additive: Opti-Lube XPD
Engine Oil: Mobil 1 full synthetic
Oil Filter: Mobil 1 synthetic media filter
Transmission spin on filter: Genuine Allison filter
Transmission Fluid: Soon to be either Mobil Delvac Syn ATF or Castrol TranSynd
Fuel Filter: Racor
Air Filter: AC Delco
Good luck, with whatever you decide to use.