We recently heard our F250 powerstroke sputter at startup so we changed the fuel filter. It seemed to fix it, the test drive went fine, no sputtering. Then we heard it sputter the next time we started it and figured maybe its working some air out or something. Well it continues to get worse but...

I have some injectors not working properly. Stiction or just dirty or old. My 6.0 has 238,000 and has had 3 injectors put in. I'm getting a code on 2 of the last 5. I was just Wounder if anyone has used "Rev X" and if the stuff really works. I wasn't sure if I should just replace the last 5...