fuel additives

Learjet wrote:
I run some Diesel Kleen through my Cummins from time to time... when I get bored.

It is good to do from time to time. I can tell when carbon has built up on my injectors because their min/max calibration is getting further out which I see with my Cummins software. Basically, the injector is adjusting the fuel rate because of the build-up. I would wager that I would probably be able to tell on the dyno as well, however, it would likely be very slight unless it was really bad.

Without this software, it is really hard to tell unless you meticulously track calculated fuel economy records and drive the same roads every day to be able to see the difference. Another way you can tell is vibrations, but this is really hard to tell in the Cummins unless it gets really bad. In my diesel car, you can easily feel even the slightest vibration.

I find it quite odd that people will spend all this money on synthetic oil when it is not needed for their application yet chastise others that spend less money to keep their fuel system and cylinders/injectors clean so their engine runs at optimum efficiency/performance. It makes no sense especially when the fuel system and injectors will likely fail long before you will see any added wear from using conventional oil. Not sure if it is ignorance or arrogance.