Having a hard time finding 90W gear oil. Would 80W-90 work for the travel motors in a Bobcat mini excavator?
I use CAT TDTO-50, better than 90W in my opinion. If it calls for 90W you can use 80W-90 or 85W-140 regular or synthetic, should all be good as long as it's GL-4 or GL-5 gear oil.