I recently drove the 30 miles to the closest gas station to me that sells ethanol free fuel. Its a countrymark station and their 91 octane at some locations is ethanol free. I filled up my Prius with the ethanol free fuel because I was there, and I got 15 gallons for some of my yard equipment as well.
I noticed something odd though, when I filled up my mantis 4 cycle tiller, which is new so the fuel tank is still really clear, I found that the 91 octane ethanol free fuel was darker than the fuel I had been using.
I poured the two different fuels I had in clear glasses and I found that the 91 octane ethanol free fuel was slightly darker than the 87 octane 10% ethanol fuel that I normally use.
Why is this? Wouldn’t clear fuel cause less deposits than fuel that is not perfectly clear? Im curious. Wouldn’t clear gasoline be gasoline that is refined more?
I must also note that the ethanol free fuel smells differently. Its been so long since I smelled real gasoline im not sure what gas is supposed to smell like.