My take on this business of mineral oil----
I buy my golf cart, 6 volt, deep cycle batteries at Sam's club. Their turnover is large and you get fresh batteries. I pay about $50 bucks each and I don't see a big loss if I do lose a battery or two. I "Went for it" and I started it over a year ago. As others report, no more gassing and I have not added any water.
It's a winner in my book-- What would be the incentive for the manufacturers to condone this practice??
2002 Newmar Mountain Aire, 37', 3778, W-22, 8.1 Vortac, Ultra Power upgrade, CAI (cold air intake), Taylor wires, colder plugs, Koni shocks.