Thanks for the advice. I put the 2 micron/water separator kit on. Those are nice kits. Diesel mechanic friend said I should replace the injectors because of my miles (187,XXX) -but the truck runs and starts great. He said 06 and 07- the injectors go out so fast that if you don't shut the motor down when they go out/stick, it will take a piston or 2 out in a matter of seconds. Then he quoted me $2500 for Bosch remans by Bosch. The lift pump and CP3 are original. Never any mods to the truck. Any thoughts on injectors?