Never heard of a propane powered MB!
 

check this out.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=2414261425&category=6329

You can go for a drive, pull out the grille :D and then fire it up to cook up some burgers.

Someone in Australia (a member of this forum or another) has a propane 71 300SEL 3.5.

Sixto
91 300SE
87 300SDL
83 300SD

Gas is popular in Oz
 

In Australia, the stuff you call "gas" we call petrol (is is a liquid not a gas after all). We also have a lot of cars that run on real gas, specifically liquified petroleum gas or commonly called LPG. The reason for this is that it sells for around half the price of petrol or diesel. You would have difficulty finding a taxi here that does not use the stuff. It is also favoured for lower exhaust emissions. The disadvantage is that the car needs to use about 20% more to travel the same distance and power output is usually slightly less. Boot (trunk) space is also taken up by the pressurized cylindrical "gas" tank which also usually offers a smaller range between refills. The tank also cannot be completely filled as a vapour space is required above the LPG which, as the name suggests, is in a liquid form at pressure in the tank.

LPG conversions are popular on commercial vehicles and our locally manufactured medium and large cars. Most of our taxi fleet are local Ford Falcons and Holden (GM) Commodores with LPG. Some privately owned vehicles have been converted, especially where the owner covers high annual mileages thus justifying the cost of conversion.

Not many Mercedes have the conversion although some of the earlier "thirsty" V8 and six cylinder models (mainly W116 and W108) were converted. Commonly seen gas powered Mercedes here are our Sydney buses. Sydney's government run bus fleet is, I believe, the largest outside Germany. We have had predominantly Mercedes buses here for well over 20 years now and many of the latest generation run CNG or compressed natural gas rather than diesel. I understand that they are a modified version of the diesel engine fitted with spark ignition which allows the use of natural gas, a very "clean" fuel.

It is also possible to use propane in a diesel, not as a complete substitute for oil but at about 20%. This is said to improve emissions and economy.

Gas conversions are popular in the UK, where a government grant is available towards the conversion of a new, or nearly new car. Almost all of the light commercials on our fleet (local government) are dual fuel, running on both petrol (gasoline) and liquified petroleum gas (propane).

Several years ago, I know a guy who owned a propane distribution business, and converted his Chevy pickup to LP. It was carburated, so the conversion was very easy.

Jeff Pierce