bertsmobile1
Lawn Royalty
- Joined
- Nov 29, 2014
- Threads
- 64
- Messages
- 24,729
The transmission makers recommend 20W50 for their transmissions
John Deer gets them to put in 10W40 because a lot of their customers also push snow
Hydros run hot so what is "best" will depend upon where you are and what you do
The guts of a hydro box have no pressure seals and rely on the viscious friction in the oil to work
Lots of animations on the web to explain just how hydros work and they all work essentially the same regardless of weather they are pistons on a face cam or balls on a cam ring .
Once you understand how they work you will see that your worries are irrevelant
John Deer gets them to put in 10W40 because a lot of their customers also push snow
Hydros run hot so what is "best" will depend upon where you are and what you do
The guts of a hydro box have no pressure seals and rely on the viscious friction in the oil to work
Lots of animations on the web to explain just how hydros work and they all work essentially the same regardless of weather they are pistons on a face cam or balls on a cam ring .
Once you understand how they work you will see that your worries are irrevelant