any of you guys use the cetane booster stuff? i dont know much about it and my dad was asking if it helped with mileage or anything else?

 

When I owned my diesel, I used Lucas fuel treatment and cetane boost and it helped out on the fuel mileage a little and it keep the tank pretty clean and once I started using it regularly, I noticed my fuel filter stayed cleaner allot longer.

 

None of the diesel additives have ever done a thing for my mileage or power. Only thing that I've tried that has truly added mileage is 2 stroke oil. I now run it in every tank.

 

Read up on what octane is and it will answer this question:

http://www.google.com/search?hl=en&q=octane

Higher then required (owners manual) octane will only increase your mileage if it was being diminish before due to pre-ignition.

 

Cetane isn't octane...

 

As Zaairman said, cetane isn't anything like octane, we're talking about diesel engines here not gas engines. Maybe try that link the the engines forum you might get a better response. Now it is true that you can get pre-ignition on a diesel, but its going to take a significant amount of cetane booster to do it. About the only way you're going get preginition is if you're running propane or water/meth and have very poor programming. They equate to a HUGE amount of cetane boost.