So I'm confused? If I take a sample of my fuel and put it into a graduated container and sit it out to evaporate for a day, the difference between the initial amount and the final amount is how much ether was in it in the first place?

I did this and was left with separated oil and kero. If correct, I had only ten percent ether content. However, I ran my taplin twin and a zom.15 on this the other day and they ran fine. I was not able to get my Kometa .29 diesel running though.

I'm guessing I can just throw some John Deere in and make it as good as new? If so I have an unopened can of davis fuel 20 years old that could possibly be of use.

Max