I have a yanmar B 3 mini excavator. I am needing to change the oil in the finals. the operators manual I have calls for an extreme pressure gear lube API GL-3 SAE 90, but I have had no success in finding that type of gear oil anywhere. Any suggestions of an alternative would be appreciated
GL5 or 6 will work fine , it's just plain old gear oil for rear axles on any automobile. jr
i just put 80w90 in my jd 30