I am reviving a 1990's toro wheelhorse - and the manual calls for SAE 20 transmission oil api classificatiion SC, SD, SE or SF oil. Have not been able to find this - are there any suggestions? thank you!
For the old Sauer-sundstrand-danfoss drives, they recommended SAE20, hydraulic oil or ATF could be used in them back in the day. The differentials were a separate component and used gear oil.