Actally, engines will last a lot longer on propane. We have a manlift that had a nissan gas engine. it also has a set up to run on propane for if you are operating it inside. I think it is mainly just a fitting on the throttle, not sure what all is involved though.
Yeah, a buddy of mine has a buggy on propane and his oil is perfectly clear after 17,000 miles, not one oil change... He cuts his filters open and it was perfectly clean as well. Propane has none of the by products of gas like carbon buildup. Also has a higher octane raiting, 103, which means you can run a higher compression, something I'm doing in my buggies engine. I don't see any reason not to go to Propane, even get full service at the gas station :anitoof:
Very close to the same, usually it's a +/- 1 mpg. So if you got 10 before you could get 9 or 11 after, just depends on quality of parts and lines used mostly... And the quality of the propane of course. More people get better than get worse though.
I don't know any names of the companies that have kits, but there are many out there for your style truck. Running propane isn't a bad idea, but you lose power with propane. A lot of ranchers run propane around here, but switch back to gas when they haul a load. But like you said you can change your compression to take care of that problem. I don't think they are to big of a deal to setup. Not a bad idea, you have plenty of room now to hide a propane tank.
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