I've never heard of this machine and just googled a couple pics, I'll give you what I know. Most all Hydro-gear pumps run 20w50 engine oil, Older Eaton pumps ran 30w engine oil. If the oil in the tank looks like engine oil run which ever oil above for the pump maker.....
Originally Posted by piston slapper
You never learn anything until you admit you don't know it all...
"Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!