I've got a 1986 Agway 825 (maybe made by Noma) with a Tecumseh snow king 8 hp. It has Pennzoil Platinum Plus 5w30 in it at the moment.
Also have a Farm King 5010 (from around 1988), running off the 3 point of the Bolens/Iseki. Open bevel gear on the blower, manual says no lube, so no lube, but I fluid film it for storage. Caroline Premium Blue 10w30 in the tractor.