Oil & Fuel Mixing udt and gear lube
- Thread starter Derf
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5030
Epic Contributor
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- Feb 21, 2003
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- SE Michigan in the middle of nowhere
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- Kubota M9000 HDCC3 M9000 HDC
I don't believe a few days will matter much.
I actually remove the SUDT/UDT front fluid from my tractors' front axles and replace it with 85-140 Shell Spirax because they receive high shock loads in the farm work I do but I've always did that, even with my previous, smaller Kubota's.
Never a failure, leak or concern in the last 15 years.
I actually remove the SUDT/UDT front fluid from my tractors' front axles and replace it with 85-140 Shell Spirax because they receive high shock loads in the farm work I do but I've always did that, even with my previous, smaller Kubota's.
Never a failure, leak or concern in the last 15 years.
actionaj
Gold Member
I changed mine out to 75w/90 synthetic. I think the thicker oil is a lot better for the gears and less of a chance for leaks.
5030
Epic Contributor
- Joined
- Feb 21, 2003
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- 26,997
- Location
- SE Michigan in the middle of nowhere
- Tractor
- Kubota M9000 HDCC3 M9000 HDC
All late model Kubota front drives are hermetically sealed against leakage. I do it solely for shock load.
The U/SUDT will flow better in the winter allowing more power transfer (until the drive is warmed up) but once it's warm, the hypoid provides much better lubrication.
The U/SUDT will flow better in the winter allowing more power transfer (until the drive is warmed up) but once it's warm, the hypoid provides much better lubrication.
I have been topping mine off with 75w140 since it started leaking a year ago. The oil is mainly used as a lubrication bath so in theory you could drain it all and replace it with just about any oil because the axle is not spinning at a high rate of speed so heat is not much of an issue but due to the loads placed on it I would stick to a gear oil.