RE: Gasoline Fuel tank Stoppers
I have been using Du-Bro tanks and their gas stoppers for many years without a problem. Currently I have a number of installations that are more than 7 years old without any leaks or other problems. The Tygon tube is still original and there has been no need to replace this every year as some contend. Yes, the fuel here in Texas does contain Ethanol but no problems with fuel stoppers, Tygon or carburettors have been encountered. BTW - I use the Walbro felt clunks in all my tanks.
Bliksem