Which Fuel Water Remover Brand Wins?

main ingredient is methanol, 100 percent; the safety data sheet indicates it is 100 percent soluble in water

main two ingredients are water and isopropyl alcohol; inherently water soluble

a hydrocarbon blend less than 95 percent and isopropyl alcohol less than 25 percent; per the safety data sheet it is not water soluble

no ice formed in the container

no ice formed in the container

formed a big chunk of ice in the container, the only one of the three products tested that did not prevent ice formation

the methanol and water mixed together into a lower layer with gasoline on top rather than separating the water out cleanly; about 12 hours after adding it, the fuel sits above the 200 ml line with the HEET/water/ethanol mixture below it

mixed quite well with the water at the bottom of the container, similar behavior to HEET; the entire contents appeared foggy compared to the SeaFoam or HEET containers

mixed thoroughly with the gasoline and left the water, plus the 10 percent ethanol content, separated out at the very bottom of the container, unlike HEET and isopropyl alcohol which both mixed into the water layer

narrator questions whether a gasoline engine can run on roughly 80 percent HEET and 20 percent water, and richened the air-fuel ratio to get more fuel into the engine to test running it on straight methanol with added water; the transcript does not include an explicit pass or fail statement of the outcome

narrator states the engine will likely run fine until it draws in the isopropyl alcohol and water mix, at which point the fuel would need to be richened for the engine to keep running; the transcript does not include an explicit pass or fail statement of the outcome

explicitly not attempted; narrator states 'I'm not going to try to run the SeaFoam through a gasoline engine, because I can tell you with absolute certainty that engine isn't going to run on water', since SeaFoam left the water/ethanol layer unmixed with the fuel