A little knowledge
I know a little about it. My brother has it on his PowerStroke. I drove it once, and wasn't as impressed as I thought I would be. Mileage was supposed to increase, but it didn't for him.
What the systems are supposed to do is inject propane in with the diesel/air mixture when turbo boost comes on. You can set it mild or aggressive. 10% propane up to 25-30% propane.
It is also supposed to burn "cleaner"
I am not the expert on the subject, as I have only read stuff about it, and have info from my brother. I'm sure others have it on their truck.
I am leary of running it on my truck due to the inherent danger of propane. Yes it is fairly safe, but I have heard of guys with propane systems on their trucks and the fittings coming loose, and gas spewing everywhere! YIKES!
I am in Enid, and we could get together. You may hear me overhead all the time, as you live where we fly our low-level missions.
SOLER