Kawboy - I bought that tester as well, right after your first mention of it
I haven't tested yet, but of course I will.
I have no doubt there is cross contamination and from what you are saying the delivery by the companies looks to be on the shady side. I did some reading and apparently the Ethanol number is not written in stone from the beginning, but rather 'up to' a certain number, and that's on the hands of the fuel supplier. From what I gather, the gas stations are not obliged to check fuel for alcohol content. So it's really up to the fuel distributor - they mix ethanol into the gasoline. So, there could be cross contamination due to carelessness, or who knows, even intentional as ethanol is cheap and pure gasoline is expensive. Just extra 1% in a tanker would add up nicely. I'm not suggesting conspiracy theories, but look at the German automobiles scandals due to rigging computers in order to show clean exhaust gases. I'd bet someone somewhere would cheat if they could get away with it.
At the pump, I only buy if it specifically says 'contains 0% Ethanol'. Can I trust it? Not sure. But without academic lab testing, I guess my real life 'myth busters' type scientific experiment gave me simple results: using that proclaimed 0% - bike starts and runs smooth, using other than that - nope, or leads to 'nope' eventually. There is nothing else to it.
I usually go to Chevron, as apparently they do offer real ethanol free gas - which will be tested by me!
About Stabil and otherwise treatments. The bottle says to add a certain volume per fuel volume. Wouldn't it make more sense to add it 'per alcohol volume'? If you fill up with 50 liters and it contains 10% instead of 5, or even more, that can't work equally for all. Or does it? I wonder if there is any study to see how compounds like Stabil effect fuel/alcohol mix, form 0 to 100% alcohol. There has to be a curve.
I've read something about ethanol free availability in marinas changed in Canada. BC at least, meaning harder to get.
Gasoline comes to Vancouver from the USA, and that's where the mixing business is done, and documented it's all over the ethanol map. Also, do the gas stations rotate storage tanks?
Frank, I think that $145/54 gallons including $20 drum is a sweet deal! It's cheaper than regular 87 with 10% here.