Here’s the latest reader question, along with my reply!
Don asks: I’ve seen some YouTube videos of guys showing how they add approximately 10 percent water to gas (in a clear container), shake it and the water and the ethanol sinks to the bottom. It is then drained out, leaving “pure or at least purer” gas in the container. I tried and am still doing this for my small engines (chain saw, etc.). I get close to 20 percent at the bottom, which I presume is the water and the ethanol. I realize that it’s impractical to do this for ordinary car fill ups. I have to leave a full tank of gas in my boat over the winter and am already using additives for it’s storage. But I would feel even better if I could put ethanol-free gas in (there’s no ethanol-free gas anywhere in my area of southern Maryland) perhaps 5 gallons at a time because of container size limitations. Have you heard of this method and can you recommend (or not) doing it? BTW – It’s close to $30 a gallon for store bought ethanol-free (but oil mixed) gas for small engines at Lowes, etc.
My reply: Given the nasty effects that ethanol-laced fuel can have when left to sit in small engine fuel tanks/carbs and so on, I see now downside to this procedure other than having to perform the procedure. Yet another hassle – and expense – brought to us courtesy of Uncle!
An easier procedure is to use StaBil marine or similar; and also, to run the equipment dry prior to storage. I do this with all my stuff and it has helped me to avoid having to tear down/clean/rebuild carburetors each spring. Some equipment doesn’t have a shut-off valve in the fuel line but it’s easy enough to splice one in. Or just run the thing until the tank is empty – and make Greta stomp her feets!
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