Kubota L2501 hydro trans noise normal?

[Cougsfan]

I’ve had B’s and now a BX. All are noisy! The 2650 with a cab was really loud!

That is something I have noticed. Any HST with a cab will be much noisier than the same rig without a cab. (But I am keeping my cab!)

 

[Unclewillie]

Hey all,
I bought a L2501 a couple of years ago and mostly love the tractor. The noise level of the hydro trans is a bit much though. This past weekend I was using a 90’s Ford 1620 that not only out “powered” my L2501 but there was literally no “whining” noise from the hydro transmission. I can honestly say that the mid 90’s Ford was more enjoyable to operate then my 2019 L2501? What the ???
This has me wondering if maybe the hydro noise of my L2501 is out of the ordinary. What are y’all’s thoughts on this? I wouldn’t say the noise is excessive but considering there was zero noise from a Ford hydro trans from the 90’s, maybe there is something wrong with mine? The Ford has around 27hp so the additional power is explainable but how the heck did they have such a smoother and much, much quieter hydro trans?
Any insight is appreciated.
Thanks

I wonder if tractor manufacturers actually use the best fluids, can't say about the L2501 but I've tried different types of hydraulic fluids in my Mahindra emax25 (Shell tmx4 if I remember right) was the worse while Mahindra and Sinopec being the best I've used but even the Mahindra brand it will wine ,not like your saying but I overcome this by adding about 1/2 cup of Supertech power steering fluid with stop leak and it's hardly noticeable. There are very good fluids out there but some lack in certain stabilizers . In my case I've found thicker fluids cause more chatter that's why the universal tractor hydraulic fluid preform better they are generally 10w30, be sure your tractor is getting the fluid required gl4 / gl5 etc., specs.