Hydro fluid for 2135

brian_b · Jul 23, 2006

Just changed Hydro fluid in my 2135. I didn't realize until I completed the change

that the fluid the dealer sold me is 737-3054. The manual calls for 737-3025. Is this an issue?

Bob_Bainbridge · Jul 23, 2006

That should be the correct fluid. I beleive that 737-3025 is a Case part number.

Bob B.

bermuda_ken · Jul 24, 2006

You did receive the right drive oil. The part number changes and they gave you some of the old part number oil.

brian_b · Jul 24, 2006

Sorry guys, my first post is incorrect. I reversed the part numbers.

737-3054 was the original hydro fluid (labelled "Drive System Oil").
737-3025 is what I just put in the transmission.

The 737-3054 oil was only $10.25/gallon (still have the price tag on my old container, which has the old oil in it). Oh well...

bermuda_ken · Jul 25, 2006

The 737-3025 hydraulic/transmission fluid(has red stripe on label) is NOT the oil recommended to use in a 2000 series. The 2000 series need the Drive System Oil (blue/yellow stripe on label). These two oils are not compatible to mix with each other.

TractorLarry · Aug 8, 2006

This is an interesting question....

I have a Cub Cadet 1864, and ordered some maint items for it yesterday, including hydro oil.

The Cub part numbers don't pan out any longer. What they are sending me is called "HyTrans" or something like that.

Does this sound right?

-Larry

Bob_Bainbridge · Aug 8, 2006

That's Hy-Tran and is a reddish colored oil that was used in the older hydrostatic drives. The newer ones call for Drive System Plus, which is a synthetic oil and around $35 a gallon

Bob B.

emt812 · Aug 8, 2006

I have a CC GT 2544 and it calls for 737-3120 trans fluid. It costs roughly $8 a qt.

TractorLarry · Aug 9, 2006

Wow. It sucks to be new hehe

-Larry

Bob_Bainbridge said:
That's Hy-Tran and is a reddish colored oil that was used in the older hydrostatic drives. The newer ones call for Drive System Plus, which is a synthetic oil and around $35 a gallon

Bob B.

supadav918 · Aug 12, 2006

Hey Brian,
I also have a 1998 HDS 2135 Cub. Penzoil, mult-vis 20W-50 is same exact fluid. Fram also makes a transmission filter but I forget the #, I changed mine about a year ago.
Good Luck!

JTKub · Aug 12, 2006

There's tons of posts on transaxle oil for the hydrostatic 2K series machines. I'm not sure when CC made the switch-over to the expensive "Cub Cadet Drive System Fluid Plus" for the 2K series, but I'm thinking it was about 3yrs ago. Like bermuda_ken says, the red stuff was never spec'd for the 2000 series. Even at $8/qt you almost never need to change the stuff. They hold ~6qts and the stuff looks as clear as cooking oil with hundreds of hours on it. I use the WIX equivelant of the CC hydraulic filter, but it looks just like a white version of the CC filter. Like you'll see hashed out in many other posts on this topic, I bet these transaxles would do fine with a synthetic 15w-40 or 20w-50, but why risk the warranty?

Joel