UDT - SUDT - another brand

[Adryan]

Paul,

the gear of the BX transfers the whining throught the frame to the ROPS. The ROPS is just behind your ears. The ROPS acts like a speaker enclosure. I'd thought if I'd fill it with foam the sound wouldn't been transferred.
...just a thought.:anyone:

sorry for the off topic...

 

[RayCo]

This is a question best discussed with your local philosopher. Here is my philosophy:

My tractor cost me $16,000. I am not a hydraulic fluid expert, nor a designer of HSTs. I realize that there is a very tiny chance that using an off-brand would cause a problem, but I am not willing to take that chance when it comes to something so costly and valuable to me. It is well worth the extra $50 for peace of mind.

 

[OrangeRidge]

.

I changed the factory transmission oil in my BX2660. ..

If you're in the US , your factory fill oil will have been SUDT .
Since hydro oil is not subject to combustion , its additives are
less important than in an engine environment . Moisture control
is the biggest aspect , after lubrication of course. Synthetic is
irrelevant in these machines . SUDT or JD HyGard ; whatever ........

 

[Ken45101]

Basic difference between UDT & SUDT is UDT is a straight 20w whereas SUDT is a 10w20 multigrade - hense better flow in cold & hot temps....

So that is why SUDT gives better winter performance in HST transmissions! Makes sense.

Is 10-30 or 10-40 engine oil better?

;-)

I know you are just stirring the pot, but Deere actually uses (their) 10W-30 engine oil for the hydraulic fluid in their skid steers! On a skid steer, the hydraulics run the drive motors.

Obviously they designed the system that way.

Kubota does NOT use UDT or SUDT for hydraulic fluid in their mini excavator. They recommend Shell Tellus or one other brand. Some of you think you have trouble finding UDT....

This is a question best discussed with your local philosopher. Here is my philosophy:

My tractor cost me $16,000. I am not a hydraulic fluid expert, nor a designer of HSTs. I realize that there is a very tiny chance that using an off-brand would cause a problem, but I am not willing to take that chance when it comes to something so costly and valuable to me. It is well worth the extra $50 for peace of mind.

^^^What he said. Seeing the variability I mentioned above, there must be some significant differences that the manufactures know about. Why else would Kubota NOT use UDT/SUDT in their mini ex's? Why would Deere use motor oil?

Of course, I do see a significant difference between a 50 year old gear tractor just using it for auxiliary hydraulics, and a newer HST unit using it for the prime drive train.

Ken

 

[CaptJCHill]

This is a question best discussed with your local philosopher. Here is my philosophy:

My tractor cost me $16,000. I am not a hydraulic fluid expert, nor a designer of HSTs. I realize that there is a very tiny chance that using an off-brand would cause a problem, but I am not willing to take that chance when it comes to something so costly and valuable to me. It is well worth the extra $50 for peace of mind.

If I were runing a fleet of same manufacturer equipment and putting on lots of time,I would look for a lower priced,but equivalent fluid.That not being the case for most of us here,I would do EXACTLY what the Owners/Service manuals say to do.Why would you put at risk beaucoup bucs for a small premium?
John
Kubota M5700
Bobcat 773t
SnapOn 3/8 ratchet (birthday present)

 

[RayCo]

SnapOn 3/8 ratchet (birthday present)

:laughing:

 

[Grateful11]

Has anyone ever had their Hydraulic Fluid fluid tested before changing it?

 

[PHILIP8N]

Has anyone ever had their Hydraulic Fluid fluid tested before changing it?

I did my engine oil, but not the trans/hydraulic/axle fluid. Good thought. Philip.

 

[crazyal]

When I bought my backhoe I went to the dealer to get the filters and oil to change the hydro fluid. They didn't have enough oil on hand (they use 55 gallon drums plumbed to overhead drops for all their oil and grease usage). He basically said that most people never replace all the oil. They just do the filters and between breaking hoses and stuff they loose enough oil that most people just buy the generic stuff and just top it off.

Of course on my Kubota the hydraulic oil is also the HST as well as the fluid for the attachments. That offers the chance to allow more contaminates and water to enter the system. For an old tractor it may not be too much of an issue but for a new tractor that you haven't got 20 to 30 years of service out of yet I don't see any reason not to give your tractor a little extra help to get there by changing the fluids.

 

[bp fick]

There are great products for universal tractor fluid made by good companies. The BX seems to operate best with a low vis fluid, of super premium quality.

The lower priced, higher viscosity stuff sold by rural stores would work, but the BX, in my experience, really benefits from super high quality, low vis fluid. Deere, Chevron, Case, Kubota, Warren Oil, Texas Refinery, etc all offer a super premium, low viscosity fluid, and yes, it is priced higher, by all of them.

Since the amount used in a BX is a relatively small volume, as compared to the larger machines, which may take 4 or 5 times as much, I see no point in scrimping.