As many of you guys know (who know me), I have been using acetone off and on in my smart. I have come to a conclusion. It gives me better economy and it doesn't. What I've found is that using gasoline alone yields about 260-270 miles to a tank. That average is a pretty hard number; it is very consistent. Then, every once in a while, I'll add some acetone and I'll get about 330 miles for the next 2 tanks. After that, even with the acetone the fuel economy goes back down to 260 miles per tank. I don't know what causes it to decrease after a significant increase, but it does. Maybe its something with the ecu that adjusts to the change in fuel? I don't know...
So, the Spumonti analysis is that acetone helps to achieve better fuel economy...and it doesn't... At least I have really clean injectors...
OK, for those of us who don't know - how much acetone per tank? I mean, what is the ratio?
the best ratio I've used is 2 ounces per tank. However, only add 2 ounces if you've run the tank down to near empty (.3 gallons or less). Use a long neck funnel and a graduated cylinder, or stainless steel 1/4 cup measuring cup. A normal plastic cup will melt because it is not chemical grade. Make sure you use a gasoline funnel, as they are chemical grade. Be very careful pouring it in the tank. You don't want to get acetone on your paint. I've accidentally dripped some on my silver paint and it did nothing, but that is because it was just a drip and the wind evaporated the acetone instantly. Best to put the acetone in halfway through your fill-up, so it is not making contact with anything non-diluted.
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