Hi Jim, Hi All,

Thanks again for your input.

I took the liberty to check into Coleman Fuels as it relates & differs from regular unleaded car gasoline and here are a few interesting comments that I found.

a.
"Coleman Fuel was developed in the early 50's as a replacement for "white gas" which in the US was readily available at hardware stores and gas stations. This was the original motor fuel, no tetraeythlead, or additives, also know as casing head gas, water white color. Was also used as a cleaning agent for mostly white materials, also a fuel for outboard motors and early powered lawnmowers. This source started to disappear in the 50's due to technology.
The Coleman fuel of today has not changed in years, it is a blended naphtha with no lead compounds, and a paraffinic type. The benzene content is controlled to .5% by wt. or less and we add a rust inhibitor along with a green dye for identification."
(Frank Schmidt, Senior Project Engineer, Appliances-Fuels-Patio Grills, The Coleman Co.)

"b.
White gas or Coleman Fuel, is basically a highly refined version of auto gas. In particular, unleaded gasoline oxidizes more quickly than white gas, resulting in the formation of gums, varnishes, and other crud that can foul a spark plug.

c.
Model Stationary Engine Fuels by Jerry E. Howell of Colorado Springs, CO.
"Fuel selection for our engines can be a problem. Some use the same gasoline that is used in their cars. My friends and I have tried this, but for some reason it really stinks when burned in our hit-and-miss engines. This is probably due to the low temperature that these engines operate at and the somewhat rich mixture required by small engines. We came to the conclusion that it also carbons up the valves and spark plugs worse than the camp fuel we had been using."

"Most engine owners are using Coleman Camp fuel with good results. My Plunket Jr. engine has higher compression than most model engines and I noticed that it made some strange knocking sounds that were not mechanical, so I decided it must be detonation. Wondering what the octane rating is, a friend called Coleman and was informed that the octane rating is only 53. No wonder that it knocks!"

"Over time, I finally became disgusted at the fine lint particles in the fuel which was causing all manner of problems maintaining a proper needle setting over a period of time. I began filtering the fuel and installing in line fuel filters on my engines. One day while at a Walmart store several years ago, I noticed they had camp fuel called Ozark Trails on the shelf next to the Coleman fuel. I decided to try a can and see how it compared to the Coleman fuel. Upon checking, I discovered that it was clear as water and had no trace of lint particles. It ran just fine in all my hit-and-miss engines. I told my friends about the Ozark Trails fuel and they gave it a try. Now they use it too and we all agree that it even has a better exhaust smell than the Coleman."

"I discovered that up to 30 parts Ozark Trails camp fuel will blend with 70 parts of methanol. Any amount of camp fuel over 30 percent will not mix and will stay seperate. An engine will start just as easily with this blend as with straight camp fuel. After running the 70/30 methanol/Ozark Trails fuel for more than 100 hours, I found that the valves and plugs stay really clean. The spark plugs in my Plunket Jr. and PowerHouse engines run almost a frosty white, no carbon deposits at all! The fuel needle setting needs to be a little richer and a tank of fuel will not run quite as long as camp fuel, but this could hardly be of concern. I can't find anything negative with using this fuel blend, only positives. I think it is the best of both worlds, as they say. If you try it, please let me know what you think of it. Don't use these fuels in your lawn mower or car, models only!"

I sincerely hope that the above info will be of some positive benefit to all.

DDriver.