95 Chevy 2500 4x4 diesel

[5spd_xj]

Injection pumps seem to be hit or miss for longevity. I add 1 pint of ashless 2-stroke oil (TCW3 outboard oil) to the tank each fillup to help lube the pump. The switch to ULSD killed the fuel's lubricity, and the older style injector pumps needed that to prolong their life.

A injector pump for a 6.5 is certainly expensive, but a set of injectors for a Duramax or Powerstroke will set you back even more.

this.

I add TCW3 to every tank in my LB7 duramax, which now has 163k on (to the best of my knowledge) the stock fuel system. Seems to run smoother, but maybe it's all in my head. I'm a little paranoid about the injector problems, but my more immediate issue is the silly dual mass flywheel. Need to start saving for a clutch!