Good Sam Community

I had the exact identical problem on my Onan 5500.Discovered it has two fuel filters, one in front of the carb and one underneath in front of the fuel pump.When I pulled the lower one, out came a bit of water with the fuel (it's the lowest point in t...

This foam comes in black, no need to paint.https://www.homedepot.com/p/GREAT-STUFF-12-oz-Pond-and-Stone-Insulating-Foam-Sealant-283064/202522224David

Had much the same situation you did with 6 T105s on my boat (feed from the dock turned off). Was informed by Trojan to charge fully for 3 days and then equalize using the inverter/charger. They lasted 11 years before I gave them to someone on the doc...

K&N filter cleaner is Castrol Super Clean, available at Walmart or auto stores for a lot less money.

Actually...SeaFoam does work. Been using it for years on various engines I pick up with this problem.David