Over winter my 8N developed some problems resulting in my rebuilding my carburetor. Had some sort of buildup on the steel parts, and sediment in the bottom of the bowl. Drained the gas tank and no evidence I can see of debris or water in the tank. R& R the sediment bowl and cleaned. Normally I run ethanol free gas in the tractor, but was wondering if I should run a load of high test with some SeaFoam to clean the system out since high test is “supposed” to have all of these additives to clean the system. Either way, I’ll run som Sea Foam with the first tank to burn off any moisture I the system. Or does it matter either way with the gasoline?