We're getting a Cat 938H front end loader for our farm and looking through the manual, I see that the trans, hydraulic and differentials can use cat tdto-tms oil. Is there anything that is equivalent to this?
There isn't anything equivalent to this although there are some manufacturers that meet the spec such as Schaeffer's. It isn't a basic R&O as my dad owns a 930G and the tranny uses a 30 weight gear lube.