I have a 2002 duramax purchased new .
My injectors have not failed .
I have replaced my fuel filter about every 2 years .
I have kept this duramax detailed and garaged its entire life .
I love this truck .
It looks brand new .
At 68 I hope to have it the rest of my life .
Can I just go to changing my fuel filter every year ?
Or do I need to add an auxiliary filter ahead of the stock one ?
Or is it hopeless ?
Do all LB7 have failed injectors ?
If I add the extra filter can I be sure that I will not have to replace my injectors ?