Here's one more data point for you Darrell. My Q200 has been flying for more than 8 years using auto gas when I am at home and 100LL away on a trip. My tanks are made of Safe-T-Poxy. I have also had a sample of the tank material soaking in auto gas with MTBE for about 7 years. There is no sign of softening or other problem. The main source of leakage that I have seen is into the fuselage layup which typically had a lot of pinholes. Those can be sealed several ways during construction. Either sand and recoat with a fairly heavy layer of epoxy, or some have added another layer of glass. Mine is sealed with just an extra coating of epoxy. Done properly, the epoxy tanks won't leak.

Bob F.
N200QK


----- Original Message ----
From: Darrell Daniels <log@...>
To: Q-LIST@...
Sent: Tuesday, September 12, 2006 8:19:03 PM
Subject: [Q-LIST] Fuel Tanks

I have been searching the archives as I am still not satisfied with the idea
that fuel can leak through you tank and into the foam of you airplane . I
also wan to burn auto fuel . After all of my reading it seems the only
people who have actually done anything is using a slosh coating which is not
really practical it a Q but it seems to be the only option is you want to
burn car gas or rid of the possible fuel leak.
The one exception is in the Archive Sam in one entry said something
about using a fuel resistant epoxy but you could not get to all of the
places to sand to easily recoat the entire inside of the tank. Any other
ideas or am I making much to do for nothing Darrell Daniels Tri Q rebuild







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