Wanting to change hydro oil in my Zero Turn, Badboy Outlaw. Hydrogear said they use standard engine oil 20w-50w in the ZT5400 Hydro's. (Mobil 1) I can not find it no where, I can find the motorcycle oil..is that the same?
Some WallyWorlds still carry 15W/50 Mobil 1 in 5 quart jugs. You can check on the Mobil site. I cannot see any reason it would not fill the 20W/50 need.
Valvoline and Mobil 1 both make motorcycle 20W/50. WallyWorld often has quarts of the Mobil 1 "Vee Twin". Not much different than the bread and butter 15W/50.
I also bought a zero turn with Hydro Gears. I also called Hydrogear and they said to use regular 20w50 engine oil.
I have used
1. Mobile 1 15w50 - 2 years -it was ok but I noticed more hydraulic pump whine
2. Valvoline 20w50 motorcycle oil - i year - it was ok but you could tell it was a thicker oil and the pumps were a little slower
3. Napa 20w50 - 2 years - It is on sale now for 1.99 quart. I will continue to use regular 20w50 like Hydrogear says. It performs good with very little pump whine.
I personally am not going to leave the oil in for 500 hours so I don't worry about the synthetic. I had rather change out more often and have clean oil in the pumps.