Did you happen to mention to tech support their opinion on the reduction, if any of the hydro whine?
No, but since I saw a difference going from UDT to SUDT2 on my
B3030, I suspect I will see the same, at a minimum, with the full synthetic.
I just ordered 17 quarts of the Amsoil Tractor Hyd 5w-30 oil. It cost me less than $20 more than it would have cost me to get 20 qts (5 gallon pail) of SUDT2. Our
B3000 (and the
B3030) take 16 qts, so I have a spare qt on hand. I never had to add any hydro fluid between changes to the
B3030 in 365hrs, though, so the extra fluid from each 5 gallon purchase ended up never getting used, because I changed fluids, stepping up in quality, for each change.
According to info I found on Kubota's website, the engine oil filters are sythetic media, so between that and the reinforcing, I'm sticking with Kubota filters for this change. The hydro filters don't appear to be synthetic media, but I didn't feel like taking the time to attempt to research cross references to find Amsoil syn media filters that might fit the trans. I do have the number for the Amsoil syn media filter that fits the engine, and it is slightly cheaper than the Kubota filter.
For reference, my
B3030 came with UDT from what I could tell from the factory (a slight possibility it came with SUDT). I changed to Schaeffer's Semi Synthetic Tractor Hyd Oil at 50 hrs, and it cut down on hydro whine & odor slightly. At 300 hrs, I switched to SUDT2 (75% synthetic), and noticed a slight decrease in hydro whine & a significant decrease in odor when hot. The new
B3000 does not come with SUDT2 because it stinks when it gets hot during backhoe use - noticeably stinkier than my
B3030 that had SUDT2 when I traded it.
I will have my oil & filters next week, but will attempt to wait to make the change until as close to 50 hrs as possible. We need to start getting some serious snow so I can burn through the next 20 hrs and get those factory fluids out of there.
I have noticed the new
B3000 engine when cold is no where near as civilized as the
B3030 engine was when I traded at 365hrs, but suspect a big reason is that it is not running syn oil right now. Syn engine oil has made very significant positive improvements in all of my diesels once I was able to make the switch.