Good morning guys! I switched to e85 last year and was only able to make a couple passes due to the motor blowing up ( not because of e85).. I had almost a full tank of e85 (approx 20 gal) and about 25 gallons in a plastic drum. I took the motor out to rebuild and clean up some things in the engine bay while I was at it. I know the fuel line (not being hooked to anything) let air into the tank. I have the vent tube capped off, but the cap is vented. I now have everything put back together and went to prime the fuel system last night to check for any leaks. Found out that my tank was pretty much empty other than a little left at the bottom (ran a hose all the way down and it came back up wet). About 20 gallons of e85 evaporated completely? (No it didn’t leak on the floor). I was going to put some more in it since I was storing some in a drum. Went to pump it out of the drum and the drum is completely empty as well! I made sure that it was sealed when I stored it. The drum is sitting on a concrete floor, but in an insulated garage. I have read about water in the fuel and that the e85 attracts the moisture in the air. However, I didn’t know that the fuel would just completely vanish- even in a sealed container. My “question” is how/ why did 45 gallons of e85 disappear? Like I said, I think the tank in the car is because the fuel line was open so air got in (didn’t know the fuel would totally evaporate). However, I don’t understand how it vanished from the sealed drum? It has been in storage for approximately 9 months. When I put the fuel in the drum & car, it tested at e-87.