One of the unfortunate things about the internet is that it spreads hysteria. Way back when, a hand full of people posted about their hydraulic pumps having leaky seals which allowed the oil from the Touch Control to get into the engine oil pan. People read these accounts and decided that this could cause their Cub (or Super A, 140, etc) to instantly self-destruct. So to prevent this from happening, thus saving their tractor from the salvage yard, they put 30wt. in the Touch Control. Many are quite passionate about it.Hi guys, I been reading about people putting 30 wt oil in there system. I think hy trans is about 10 wt. does anybody have thoughts about this. good or bad. Tia, Ed


And motor oils have detergents that usually make foaming worse.Hydraulic fluids have anti-foaming additives that motor oils do not have.