My buddy with a Duramax had to replace all his injectors at 120,000 miles and got me worried - I have about 200,000 miles on my 2006 Dodge. How long do injectors typically last and how does it diff...
Good friend of mine had a injector crack on his LB7 and dealer quoted him $7,700 to change all 8. He ended up going to a non dealer mechanic who did the job for $4,400 with the injectors themselves being $1,200 of that cost.
I run 3 micron Baldwin filters on my truck and if I run waste motor oil it's filtered down to 2 micron before going in the tank.