My Customers at Bushtracker in Australia, do big time towing of 3-4 tons in rough going in the Outback off-road... I have done a study on Propane for the past two years and here are my findings in a nutshell...
Problems like pre-detonation hammer on pistons and wrist pins and rod bearings... And some valve train problems. All these problems were long term, but it seemed like the savings was not worth the wear and tear and that explains why the Commercial Trucking Industry on the whole has not shifted over and embraced the technology as a whole. The Propane has a different combustion point than the diesel, so even tuned you are prone to the pre-detonation.
If it were so good, the Truckies in Australia and America would have shifted over, as fuel costs are their NUMBER ONE problem...
My last F-250 was done by the Bushtracker Owner that bought it.. He reported something like 20% more power and fuel economy if you keep your foot out of it..
However, I am not inclined to do it myself, having heard from Engine Builders Shops about the toll on the engine over time. They have convinced me it potentially shortens the life of the engine, so I will not do it, as it appears to be false economy and not cost effective… Only case for it is if you NEEDED more power, and were willing to take the chances… I do not think the risk is warranted despite what the people selling the gas gear say. If it was that great, they would be building the new trucks like that already just for the fuel economy and the Mandatory EPA compliancing for fuel economy…
And they are not, even though it restricts them due to the fuel economy on the current trucks.
If it was as easy as the gas addition, they would all free up their production to do it, to increase their Fleet fuel economy, and get the Greenie EPA off their back. And if it were so great the Commercial Trucking Industry would be shifted over to it in a major way... and they are not. I personally have only seen one Semi running it, break even on the equipment was something like 100,000 kms for them.. But just ask yourself, if it was so good, why would we not see more???
Best Regards from Australia.... And God Bless America
, one of the last Bastions of freedom.... I can't vote, but I hope you don't become an "ObamaNation"
Just a little Satire from a Fan, hope it is allowed.