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I didn't want to hijack the seafoam debate; reading it got me going on researching the ethanol question, With a new boat and 2 new motors and my first winter coming up, the interest was somewhat heightened compared to previous years/ A couple of interesting reads I came across: from Evinrude: http://www.evinrude-parts.com/boat_ethanol_danger_precaution.html A 2011 article with some very interesting quotes from Mercury http://www.boatus.com/magazine/2011/december/ethanol.asp one from a guy who has way more time after every outing than I do, but who knows his way around a motor way better than me: http://www.injectorrenew.com/The_Facts.html (note - a lot of what is here is the same as in the Evinrude article) and those led me to start investigating the concept of a water test kit, which led me to the statement below, which is very interesting. Of course this raises the question - if the ethanol absorbs the water, would the response of the food colouring be as described, or did this individual make a wrong turn at Albuquerque when going down the deduction highway? (this guy is into airplanes BTW) While driving 20 miles into Mississippi to get ethanol-free gasoline for my airplane I was contemplating what must be in the blue dye that is in the Quick Check Solution kit. It occurred to me that what ever it was had to be water soluble so it would mix with the ethanol. I always check the suppliers of ethanol-free fuel before pumping any gas as I have been lied to about it. Anyway, the test kit that you add water to is a hassle and takes a few minutes to settle out. The blue Fuel-Check works great but is expensive. When I got home I got my wife’s red, blue and green food coloring out; it’s water soluble. A quick check with pint jars of ethanol-free fuel and adulterated fuel indicated that a drop of any color food coloring will dissolve and turn the adulterated fuel the same color as the food coloring. Putting a drop of food coloring in pure gasoline, the drop just goes to the bottom of the sample and rolls around there as little globules. Now I just carry a bottle of inexpensive and readily obtainable food coloring and a quart glass jar – it’s easier to get a fuel sample into – and have an instant indication of ethanol free fuel or adulterated fuel. and Shell claims that the V-Power in Canada contains no Ethanol? I didn't think that was universal? Be interesting to confirm if the above article works. BTW - more than one of the reads indicated some gas stations ( qualifier: these articles were all written in the US ) have been found to add additional ethanol to improve their profitability, some to levels that were causing serious damage to motors. 2. Is Shell V-Power premium gasoline safe for all vehicles? Shell V-Power is effective in all gasoline-powered engines found in conventional, modern and hybrid vehicles as well as motorcycles, snowmobiles, and leisure marine vehicles. Tested in today’s advanced turbo-charged and direct injection engines, Shell V-Power helps resist thermal breakdown at high temperatures, actively protecting against gunk under tough engine conditions. Shell V-Power premium gasoline in Canada does not contain ethanol. I'd be interested to hear everyone's experiences, and comments from our mechanic / DIY members on these statements