StingrayL82 wrote:
Only one of those fixtures is for the vent. There is a hose that runs all the way up to the metal filler. No filter, but it's a great idea. The other fixture is the return. Monaco plugged the original return off at the sender...because of the extra capacity of the tank, it sits right up at the floor of the coach, so the fixtures have to bend 90° and the original return on the sender does not.
Do not change it! An air filter on that hose will create more problems than it solves. It will also disable EPA mandated emissions controls.
The other vent on the tank is for the
Evaporative emissions control. (See link.)
