Our fuel gage almost never read over 1/4 tank. I think the sender failure is a result of the coach sitting with only a partial tank and then the sender algaes up or cruds up if you prefer.<br/>I filled the tank, added a whole bottle of Startron Diesel fuel algae eater (one bottle treats 256 gallons) even tho our tank is only 100 gallons and tank was down about 25 gallons....