Oil & Fuel Front Diff Oil

   / Front Diff Oil #11  
There are several small cavities for the front axle fluid to move through. The lighter hydraulic fluid seems to perform better in the colder climates. It doesn't get the benefit of warm-up from the tractor.

That's what I like about the synthetic gear oil.
 
   / Front Diff Oil #12  
I just changed the front axle lube in my new-to-me 2004 Kubota B21. I'm in a cold climate & a big fan of synthetic - I use it in everthing that is run in the cold.
The local Kubota dealer carries Tutela 75W-90 gear lube so that's what I used.
 
   / Front Diff Oil #13  
Up here, we use Shell Donax Hydraulic Fluid. There are several small cavities for the front axle fluid to move through. The lighter hydraulic fluid seems to perform better in the colder climates. It doesn't get the benefit of warm-up from the tractor.

I use the Shell Donax TD hydro oil for the main part of the tractor. It's a 10w-30 weight oil that seems a little thin for the front axle. The 80w-90 I put in the front axle was synthetic and not overall expensive being that you don't need that much. Just my thought but I can see MIE's point if there are small cavaties for the oil to get to. Maybe that's why I had to check and add oil to my front axle twice after the refill.
 
   / Front Diff Oil #14  
I used 90w gear oil at 50hrs and haven't changed it since. I cannot imagine it makes much difference so long as it is slippery fluid. It's not like these tractors are flying around at 60mph or that the front diff is a precision high pressure pump like the HST. Pretty big gears moving pretty slowly so why wouldn't just about any oil work? When I spill 90w oil it certainly gets into very small cavities. I can see the potential benefit of hydraulic fluid in very cold weather though.
 
   / Front Diff Oil
  • Thread Starter
#15  
I'll go with an EP 90w I suppose. I'd agree with IT in that we're talking low speeds here. Once all the tiny spots are full I can't imagine a need for volumes of lube moving from here to there in any hurry.
 

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