Case 222 hyd oil

karl h

Ops manual says 5w20 winter and 20w40 summer. With the advancements in oil can i safely run a 5w40 all year?

Not trying to start an argument; just looking for best oil to use year round
15w40 is what is recommended and i run in my swather as hydraulic fluid.wasnt sure about the occasional winter use of that grade in the 222. Thanks for your advice
I've had a bunch of Case GTs over the years. Those with really good pumps got 15w40, those with somewhat worn but usable pumps got 20w50. My next one will be 15w40 also.

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