Expect the General Motors pickup engines, as in, Chevrolet Silverado and GMC Sierra to be powered by propane (LPG) or compressed natural gas (CNG) alternative fuels as soon as 2012, according to the chief engineer for GM’s full-size trucks, in a conversation with USA TODAY at the Detroit auto show.

LPG and CNG can be less expensive to use than gasoline. They burn so cleanly that the fuels are used on work vehicles indoors, such as forklifts inside warehouses. I have been on the propane bandwagon for years, ever since I converted my gasoline generator to propane.

Conventional gasoline internal-combustion engines can be modified to run on CNG or LPG relatively inexpensively. But those fuels contain less energy than gasoline, so a vehicle has to have a bigger fuel tank to go the same distance. Full-size trucks have enough room to tuck in a big tank, For me the fact that my engine runs cleaner and smoother and will last longer makes up for any loss of power.

Some trucks are already CNG or LPG powered.

They are mostly heavy duties. And GM standard-duty (a.k.a. “light duty”) trucks can be converted by aftermarket companies. But a GM-backed LPG or CNG system could appeal to conservative buyers who want a big company to stand behind the vehicles.

GM-built engines for LPG and CNG will have hardened valve seals and so forth for long-term durability. You could have trouble at 70,000 – 80,000 miles if you don’t have the proper materials.

GM likes not only the lower cost and lower emissions of LPG and CNG, but also the fact it’s another fueling alternative.

Just a thought if you ever have to exchange the engine in your truck. Without actually experiencing LPG in person, it is hard to imagine how clean running, with a distinct lack of exhaust fumes stinking the place up, a vehicle running on LPG is. Think about it. If you need a replacement engine for your Chevy or GMC truck, Call GotEngines.com for the perfect engine for your application. 1-888-344-8044.