I have used it with no problems from there chain saw bar oil to 15/40 diesel oil and assorted tractor fluidsĀ , I do not see a problem as long as you are using the correct oil for the application .
Just make sure it meets the API, ISO, and AGMA ratings. Don’t know what tractor you have offhand, but I think you need the gear oil to meet API GL-4. Nothing above that. All that info SHOULD be on the labeling.