Quote:
Originally Posted by Doug Doty
Non alcohol farm or boat gas is our best friend on these old carbonated engines. I go out and get 100 octane LL ( low Lead ) as it still has some lead to protect the decades of airplane engines that were designed to use it as a lubrication for the valves mostly. I mix it with farm gas to make what I think is a perfect blend since the small engines do not need that much lead and the aviation gas can sit in a fuel tank for years and still seem to perform well if woken up from a very !! long sleep. Must be loaded with some type of preservatives. Straight AV gas is a bit too lead heavy for our little kohler engines as it can lead foul the spark plugs on weaker ignitions.
The real issue with all this alcohol gas these days is what is left behind when the gas portion evaporates out of vented carbs. The remaining cocktail seems to be very corrosive and I have seen it literally eat holes through small engine and boat carbs. Good old gas did not do that.
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Good old gas did evaporate....it just took longer to evaporate.
Biggest problem is some small engine owners have poor fuel storage habits. Bulk tank farm gas is a problem waiting to happen in small engines unless it is replaced every 30 days. Your small engine owners manual says to replace your fuel in your small engine every 30 days.
Been running gas with alcohol since it was called bio gas. I had some minor issues at first......none in the last 15 years.