Originally Posted by duramax
ULSDF is the main problem in my opinion and research. Their has been a lot of premature injector failure do to the lack of lubricity in the fuel. In my duramax, I add a half quart of 2 stroke motor oil every tank. Optilube XTP for the D every tank since new.
I've heard of doing this as well. Does this affect the DPF?
I have a friend with a Mazda RX-8 and he adds premix to his fuel as well.