Synthetic Hydraulic Fluid & FEL performance

buzst · Nov 17, 2003

Last fall I changed out the UDT in my B2150 for Super UDT to help with cold weather performance. I did get better cold weather performance but also experienced about a 20% reduction in loader lift capacity. Kubota tech suggested that this is because the better flow of super UDT permits easier bypass of worn components thus reducing lift cap. I am about to change fluids again and would like to use a pure synthetic to eliminate hydo whine, but I'm concerened that loader performance may suffer even more (my understanding is that Super UDT is a blend) Any thoughts? Is there a Synthetic fluid that is "heavier" than others that may perform better?

art · Nov 17, 2003

The whine will be there no matter what oil you use. I do believe unless you have put a lot of hours on your tractor that the rep gave you a lame excuse. I would wonder how you knew that you had a 20% reduction in load capacity? You may have had a relief valve get a little weaker but that can be adjusted.

buzst · Nov 17, 2003

Thanks Art I figure 20% because the rated lift is 840lbs and last fall I moved a rock (picture in one of my old posts) that I could not lift again after changing fluids. This summer I did a patio project using 50lb concrete blocks and the loader could only lift 12 of them at a time.
Is the relief valve something I can adjust myself?

slowrev · Nov 17, 2003

you mentioned hydraulic whine... I would do a pressure test and see if the pump is doing as it should. The whine might indicate a unhealthy pump, but maybe not, I have seen pumps that whined bad and worked fine for many years. Just a thought....

buzst · Nov 18, 2003

slowrev, the whine I was refering to I think is the "normal" noise produced by hydro tranny. I though I had read here in other postings that Syn fluid would help reduce this noise?

slowrev · Nov 18, 2003

No problem if normal whine, but I have heard the whine keep getting louder as a pump breakdown approached. Hope yours is the normal level /forums/images/graemlins/smile.gif

MikePA · Nov 18, 2003

I though I had read here in other postings that Syn fluid would help reduce this noise? 
I am going from memory, so please bear with me. /forums/images/graemlins/tongue.gif

There is a specific 'problem' that affects Class II NH Boomers when the hydraulic fluid is cold. There's a louder than normal whine when using the FEL until the fluid warms up. It doesn't hurt anything, it's just annoying. The 'real' fix from NH is to replace some steel lines with rubber. In some (all?) cases switching to a synthetic hydraulic oil, which flows better when cold, has also resolved the problem.

Boomer33 · Nov 19, 2003

New Holland also suggests the use of F200 Hydro Fluid in place of NH134D in colder climates. They say it can be used year round! To my knowledge, it is NOT synthetic, but rather multi viscosity. My 7308 Loader screams when the temp. drops below 10 deg. I plan to switch to F200 at the 300 hour fluid change. I understand also, that the "float" position of the bucket will not engage while this "whine" condition is present. If you use your loader for snow removal, you shoul consider this also!

MikePA · Nov 19, 2003

My 7308 Loader screams when the temp. drops below 10 deg. I plan to switch to F200 at the 300 hour fluid change. 
In preparation for this winter, this is why I switched to Amsoil synthetic hydraulic fluid.

Boomer33 · Nov 20, 2003

Mike: How or why is Amsoil Synthetic better than NH F200? Is it suitable for year roud use?

MikePA · Nov 20, 2003

How or why is Amsoil Synthetic better than NH F200?
It's not just a thinner oil, as previous posts about F200 indicate. It's a full synthetic that flows at -40F.

Is it suitable for year roud use? 
Yep.

neilw · Nov 23, 2003

Check out Chevron All-Weather THF. Its a full synthetic rated for your machine. And like the Amsoil it does not improve cold flow by lowering the viscosity of the fluid. Just a fluid with a great natural viscosity index.

MikePA · Nov 23, 2003

Check out Chevron All-Weather THF.
I've already switched to Amsoil. /forums/images/graemlins/smile.gif

And like the Amsoil it does not improve cold flow by lowering the viscosity of the fluid. 
Did you mean 'And like the Amsoil it does improve cold flow...'

NoTrespassing · Nov 23, 2003

I think he meant what he said, I'd read it again.

Boomer33 · Nov 25, 2003

Mike: Which Amsoil product did you use? I went to their website and found several versions. Is one more correct than the others?

MikePA · Nov 25, 2003

Which Amsoil product did you use? 
Synthetic Tractor Hydraulic/Transmission Fluid, C-3, C-4.

There are 5 different ways to order this, from 1 quart bottles to a 55 gallon drum, but it's the only Amsoil hydraulic fluid I am aware of.

 I went to their website and found several versions. 
What other products did you see?

OilMan · Nov 26, 2003

Hydraulic oils available from Amsoil:

Synthetic Tractor Hydraulic/Transmission Fluid (ISO46, SAE30) ATH Available in qts, pails, drums
Synthetic Hydraulic Oil (ISO15) AWF Available in pails and drums
Synthetic Hydraulic Oil (ISO22) AWG Available in pails and drums
Synthetic Hydraulic Oil (ISO32) AWH Available in pails and drums
Synthetic Hydraulic Oil (ISO46) AWI Available in pails and drums
Synthetic Hydraulic Oil (ISO68) AWJ Available in pails and drums
Synthetic Hydraulic Oil (ISO100) AWK Available in pails and drums

Contact me and I can give you more info: dave@ultimateoiltechnology.com

Dave

MikePA · Nov 27, 2003

Hydraulic oils available from Amsoil: 
The context of this discussion is tractor hydraulics therefore the only Amsoil product that applies is ATH-Synthetic Tractor Hydraulic/Transmission Fluid, ISO 46, SAE 30

None of the other ones you mentioned apply.

 Contact me and I can give you more info: dave@ultimateoiltechnology.com 
TBN offers very reasonable advertising rates for your oil business. /forums/images/graemlins/smirk.gif

OilMan · Nov 28, 2003

The context of this discussion is tractor hydraulics therefore the only Amsoil product that applies is ATH-Synthetic Tractor Hydraulic/Transmission Fluid, ISO 46, SAE 30
 The question was whether there was one Amsoil hydraulic oil or several. There are several, but you are correct, only one applies.

TBN offers very reasonable advertising rates for your oil business. /forums/images/graemlins/smirk.gif 
These forums are a great source for ideas and information. Thanks for the info /forums/images/graemlins/smirk.gif