very slow

[sal43]

I have 132 hours on the sd 54 raptor. yesterday as I'm mowing it just it slowed down, barely moving. checked the hydraulic reservoir. it was below the min. it uses 20w-50w. I only had 20w-40w.??

 

[Rivets]

My recommendation with Hydrostats, use the proper viscosity oil only. Trying to save $$$ can lead to bigger problem. Read my signature.