Aren't the diesel uses for propane different than the petrol uses? I know it acts as a catalyst in diesel fuel which makes the combustion process up to 100% efficient. I don't think it does that exactly in our engines. I'm really more concerned with it's uses there.

 

I would think if it left any harmful crap in a gas engine it would leave the same thing in a diesel engine. Both ways its getting burnt.

 

You are right, water is compressable, but not under the conditions that are being discussed in this fourm. I stand corrected.