Loosing coolant slowly
Have you checked the sight glass in the engine compartment near the radiator cap where you add coolant? I was having to add coolant (about 1 gal / year) to keep it full. Didn't seem right to me.
Turns out the transmission cooler was leaking. It was replaced under warranty, but recently it also began leaking. Now out of warranty, Tiffin provided another part, but I had to install (or have it installed) on my own. Seems like everything is OK again... at least for awhile.
Brad & Dianna
2017 Allegro Bus 37AP
2015 Jeep Cherokee