I know this doesn't have anything to do with trucks but I was hoping someone might have an answer. I'm changing the fluids on my new toy 1755 Oliver Diesel (farm tractor) The manual says to use Type 55 Hydrolic oil, however when I went to get it from the local oil company they never heard of it. They had, I belive it was 20-55, it was just a step above break fluid (from what they were saying). So they sold me SW 200? Supose to be the most common hydrolic fluid used in tractors etc. It looks about the same consistancy, but I haven't drained the fluid out of the tractor yet to really compair.
Thanks for any info!

 

Here's some sites you might look at:

http://lubes.conoco.com/techdata/eng...an%20Fluid.pdf
http://www.ytmag.com/oliver/messages/32123.html

Just did a search on "type 55 hydraulic oil".
Hope it helps.

 

Sure does! Thanks!

 

Most tractors now use UTF (universal tractor fluid) as a hydraulic oil. This stuff is made by just about every oil vendor and is acceptable for use in just about all tractor hydraulic systems.

UTF gear oil seems to be close to 20W motor oil in viscosity. I changed out the 80W GL4 factory fill hydraulic oil in my tractor and used Catipillar's version of UTF. So far it works just fine.

Now I have to find a use for 14 gallons of used 80W GL4 gear oil that looks perfectly new...... So far I've been able to use 2 quarts as chain saw bar lube. Only 54 quarts left to go.

Lou Braun

 

Lou, that's good to hear. I'm planning on replacing the 85w90 in the transmission of my AC WD45 with UTF next time I change it.

Man, you have a lot of saw'in to do now...

 

I agree! Hope you like splitting wood Boy did I ever find a mess when I changed out the hydro fluid! Got about a 20 oz bottle of water out before any milky white oil...Think thats bad, I found a chunk of glass, yes GLASS in the filter... About the size of a pencil eraser. So far with the new filter and SW 200 oil it's working pretty good. Now for the 12gal of 80w gear oil @ $35 for a 5LB bucket

 

horsepuller,i dont think u can replace 80w-90 with utf. if i remember right the transmission and hydraulic are two separate systems. my ac175 was this way. u put 80w-90 in the trans and the hydraulic takes hydraulic oil. then my ac8050 is made with the trans, hyraulic, and rearend as one unit. i guess my point is the oils are different and not all tractors are built the same

 

I'm with gusher on this one, and as a former AC Wd45 x 2 owner, its best to stick with what the tractor came with.

On our farm each different tractor has different power systems, our Internationals tend to have the 3pt., ps, tranny, and rear hyd points all tied into one system, and the requirement is UTF for this tractor. Our 830 Case is a different story, each system has its own resivior and each takes different fluid, some take 80w, hyd oil, or UTF.


IMO, putting UTF in place of 80W in is only asking for trouble, with the high heat tractors often endure, I cant understand the logic behind dumping out 80W and replacing with UTF.

my .02

 

Okay guys, I'm listening. Yes the hydraulic's and transmission are separate compartments.

Here is my reasoning for wanting to switch to UTF:

1. The original fill spec'ed 80w gear oil. 80w is hard to find so almost everybody uses 85w90 which is still not what was called for.

2. 80w gear oil is near the same viscosity as 20w motor oil. 20w oil is recommended for the transmissions in some other Allis-Chalmers models. Most UTF's are in the 20w range. I'm using Pennsoil Hydra-Trans Fluid in the hydraulic's, which is 10w20.

3. The model WD45 has a separate transmission clutch (hand clutch) which runs in fluid. UTF is advertized to have "excellent frictional qualities."

4. UTF has an excellent additive package for transmissions, plus a demulsifier to knock out any water contamination.

5. UTF usually passes the same Timken Load Test as gear oil.

6. The SuperTech 85w90 I'm using, foams.

7. If I use one fluid for both compartments, I can minimize the oil I keep on hand.

What I don't know is, if different transmission oils are required depending on the way teeth on the gears are cut. Straight cut vs. diagonal. The final drive gears are straight cut, don't know about the transmission gears.

So there are my reasons. I'm still on the fence on this and and I value you guy's input. If anyone has good rebutal to my reasoning here, let's hear it! I would like to hear any opinions pro or con, either way.

But I will need to change the transmission oil soon anyway. When I picked up the SuperTech, the choices were GL-1 and GL-5. I got the GL-5 without thinking about the high sulfur additive in it. I don't know if the WD45 transmission has any yellow metals in it, but why take the chance? (I know, cheap insurance, LOL!) Plus it foams, that can't be good!

 

i went down to my barn and took a look at my can of 80w-90 and my can of utf. they dont look even close to the same viscosity to me. when we refill the tractors in the winter time you can see quite a difference. use what you want but my trans that call for 80w-90 are going to get 80w-90 and utf is going in the ones that call for it. i almost to add that in wd45 with the separate hydraulic system you can use plain hydraulic oil if you want it costs less than uyf