Matt Bachand
Depends on the 6.5
i'll try the two stroke oil, though i was SUPER impressed with the stanadyne additive. i was setting codes as fast as i could clear them before the additive, but after i added it, codes went away, but hiccups and farts stayed....until now anyway. price between additive and two-cycle are about the same here, but it is worth a try. thank you!
They recommend both btw, FWIW you supposedly get back your investment in increased fuel mileage also.
Longevity of your lift injection pump and possibly LP too depend on consistent lube via diesel fuel additives to make up for the Ultra low sulfer. (the sulfer was very lubricating).