Isopropyl Alcohol

JDScrap · Post by **JDScrap** » Thu Jan 26, 2006 1:27 am

Last year I trailered a perfectly running sled (4) hours at night on a cold weekend. When I went to unload, the sled would not start. After checking spark etc., I found the fuel filter full of ice along with the fuel lines. So I bled the lines and changed fuel filter at night while freezing my ass off while everyone was waiting for me.

Needless to say, I learned a lesson about moisture in the gas tank. But my question is how much "heet" should a person add to the gas of a 2-cycle engine? I am going for a snowmobile weekend and do not want this hassle again. Any suggestions for moisture elimination?

Note - I did not drain my gas tank last year but did add stabilizer.

Ryan H. · Post by **Ryan H.** » Thu Jan 26, 2006 11:11 am

The stuff i use says to use 1 bottle per 10 gallons, which is what i do with great results. You only should use the "heet" if you are running non-oxyenated gasoline, you should not need it otherwise, as the other gas has ethanol in it.

400brian · Post by **400brian** » Thu Jan 26, 2006 5:16 pm

Alcohol in 2 stroke fuel is a topic that gets a lot of discussion, but no clear resolution.

Some in the UL crowd absolutely will not run gas with ethanol in it, others have no problem with it.

One issue that I believe I have seen for myself, is that under the right conditions of atmospheric conditions and temps ( very low ) the water will condense out of the fuel and freeze. I have seen a sediment bowl fill with ice and be pushed off its gasket allowing gas to run on the ground. All in just a few hours time, with no prior water evident in the bowl.

Here in Wisconsin, I believe you have to buy premium to get 90 octane without alcohol.
As that is what is recomended for the early sleds, that would seem to take care of that issue.
On the newer sleds, I guess you'll have to do what you can make work.