Alternate Hydraulic Oil and Filter

   / Alternate Hydraulic Oil and Filter #1  

dryflycaster

New member
Joined
Jan 21, 2007
Messages
21
OK, I need to change the Hydraulic Oil and Filter on/in my TC33D, the current system is extremely contaminated with water, so I need a little info. I checked the price of the oil at the local dealer and it's about $150 bucks for a 5 gal pail, that's pretty absurd. Tractor Supply's Premium/Ultra is about $75. Since I don't get along to good, with my local dealer and it turns out a dealer is my only recourse, I'll be traveling to the next closest dealer, approximately 50+ miles away.

Question No. 1; Is the premium Tractor Supply hydraulic oil OK to use in the TC33D ?

Question No. 2; Is there a alternate filter I can purchase ?

Question No. 3; Where exactly is the filter located on the tractor ?
 
   / Alternate Hydraulic Oil and Filter #2  
from the WIX Filter Finder

Screenshot 2025-05-29 at 8.04.51 PM.png
 
   / Alternate Hydraulic Oil and Filter #4  
Does the machine have wet brakes or clutches? If so I would make sure you use NH fluid. I believe I paid $120 for 5gal of NH fluid about 2yrs ago. Either way I would flush it with the cheapest hyd fluid can find. A quick run, cycle the 3pt and cylinders then dump it all.

Hows the water getting in?
 
   / Alternate Hydraulic Oil and Filter
  • Thread Starter
#5  
To tell you the truth, my plan was to buy a bucket or two of the low grade oil from Tractor Supply (about $40 a bucket) to rinse the system and then dump it. First on the list, though, is to repair the leak at a hydraulic block on the right side of the engine, how the fitting loosened up enough to leak is also a mystery at this point. No work was performed on the tractor in that area, so I just don't know. I noticed a slight leak (a couple of drips or so) on the floor this past Winter, each time I used the tractor to move snow, but it wasn't a real concern at the time. It wasn't until this Spring when I went to move the tractor that the leak, from a fitting on the hydraulic block, became more profuse, spraying a milky combination of oil and water all over the place.
There are no obvious leaks anywhere other than at the hydraulic block.

I have no idea how or where the water is getting into the system. The tractor is barn kept 99% of the time and is never (only about 1% of the time) left out doors. It is used occasionally during inclement weather (rain) but that usage is very seldom.
 
   / Alternate Hydraulic Oil and Filter #6  
I'd use what they recommend in that tractor after you get the old oil replaced and cleaned out well.

May not be much difference, but there "can" be. Lubricants and fluids have their own spectrum of stuff you couldn't fit into a volume of encyclopedias.

Some have detergents, some have anti emulsifier ingredients, different weights and operating temperature tolerances. It goes on and on.

I could be the water in there started as condensation. There's a few things that could cause that too.

Warm it up good and run the tractor/PTO for a bit to mix everything up before you drain. It'll get more of the bad stuff out, water, dirt, particulates...
 
   / Alternate Hydraulic Oil and Filter
  • Thread Starter
#7  
from the WIX Filter Finder

View attachment 3534180
Thanks for the WIX data and the heads-up on the WIX Filter Finder. I searched a bit and I managed to find the WIX Filter Finder page. Each drop-down selection is a bit long in the tooth but I managed to find the same data that you supplied, it's very helpful.
 
   / Alternate Hydraulic Oil and Filter
  • Thread Starter
#8  
A follow up to all of this is; I thought that the hydrostatic and the hydraulic were different systems, but that may not be the case here. It has now leaked enough fluid so that the tractor will not move, nor does it even sound or feel as if it is pumping. So I guess I'll replace both filters and the fluid. But as I stated earlier, I first need to repair the leak.

So........ exactly where are the filters located on this tractor ? I haven't been able to find them yet. Obviously I'm not looking in the right place(s).
 
   / Alternate Hydraulic Oil and Filter
  • Thread Starter
#9  
Where is the best place to drain this to ensure I get most of it out ?
 

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