What's in there is probably hydraulic fluid. Tranny fluid would be a substitute. I talked to Lippert a few years ago when I had a leak and they said use dextron 3. Jerry.
Sent from my iPhone using Forest River Forums
2005 GMC Sierra 2500HD, Duramax 2WD CC/SB
2013 Cardinal 3030RS full body paint
B&W Companion slider, air bags, EFI Live Custom tuning by So Cal Diesel