Kubota UDT Vs. Super UDT

[digdug1]

Hello, it is time for my 50 hour service. Has anyone here changed from Kubota SUDT to Kubota UDT and noticed a change in performance (HST transmission)? I have searched here but did not find anyone with personal experience. I live in Austin Texas where winters are mild and temps rarely get below freezing. Summers are really hot. I have a 3240 HST with 724 loader. My manual states the tractor comes from the factory with SUDT. It performs very well. I was hoping to use regular UDT fluid to save some money. I just paid $120 for 3 oil filters.

 

[medicshawn]

I would think there's a reason it comes with SUDT from the factory and consider it cheap insurance. Especially if there's a warranty issue that they try to blame on using udt versus sudt.

 

[dex3361]

Hello, it is time for my 50 hour service. Has anyone here changed from Kubota SUDT to Kubota UDT and noticed a change in performance (HST transmission)? I have searched here but did not find anyone with personal experience. I live in Austin Texas where winters are mild and temps rarely get below freezing. Summers are really hot. I have a 3240 HST with 724 loader. My manual states the tractor comes from the factory with SUDT. It performs very well. I was hoping to use regular UDT fluid to save some money. I just paid $120 for 3 oil filters.

I have heard that you may hear more whine with UDT. The UDT meets the Warranty requirements.I talked to my parts dealer in WV he reccomends the UDT over the SUDT in our area. the SUDT is not a synthetic as some belive. According to the dealer the SUDT is a little thinner in viscosity and is better suited for those who live in colder climates. With the dealers advice in mind I will probably swap the Factory SUDT for UDT when the time is up. Though I let my machine warm up when its cold even with the factory shipped SUDT. I may also search for a synthetic and compare prices.

 

[Waterlogged]

After considerable research, the dealers indicate that UDT will work fine in warmer climates and many use UDT. Those individuals that choose SUDT do so out of fear of warranty concerns. I switched to UDT due to cost and mild temps in the PNW.

 

[Marcussen]

My dealer recomended UDT so of course I went with SUDT. I believe SUDT is a multi-viscosity (10W-30) and UDT is a single grade (SAE 30), The SUDT is supposed to work better in cold weather starts. I does not get that cold in Oklahoma but it work fine at 10ºF which is the coldest I have used the tractor .

 

[Ace3]

For what its worth, my dealer only recommends SUDT for the area I live in. He told me that I could use UDT but I would be back to replace it with SUDT after the oil filters blew appart. He claims to have seen it numerous times.

 

[es350]

do a search since this issue is like 6+ years old....

 

[curtisfarmer]

I considered using Tractor Supply Store oils which they claom is the sam au UDT and even have a pREMIUM BLEND AS WELL, BUT HAVING BEEN DISAPOINTED WITH SOME OF THEIR OTHER STUFF, i SAid (sorry about the caps) now way. Cheap oil is....cheap oil. SUDT is $105 a 5G pail up here. Yikes!!!!

 

[digdug1]

Thanks for all the input.

Waterlogged - is your machine HST?....did you notice any changes when you switched to UDT?

 

[nh DRAGON]

I switched to udt last spring and I have ran my tractor in -20f this year even from complete cold and not only did I not hear any extra wine but it did not move slow or blow any filter off ether!

 

[Farmer Joe]

Hey Ya'll -

For what it's worth, I just did the 50 hour service on my L3400. Instead of using the Kubota SUDT or UDT, I used Chevron 1000 THF. The main reason I used it was because I had 10 gallons of it hanging around that needed to be used or given away. It's what I used to use in a previous tractor that I owned.

Also, I did some research and asking around, and it turns out that the Chevron 1000 THF meets Kubota standards. I had also read on some other tractor discussion forums where people had used it with no ill effects.

I'm not sure, but I bet it's the same as the Kubota UDT. But it's quite a bit cheaper though. I even asked my local Kubota dealer about it, and he said that if it meets Kubota standards that it should be just fine.

Well, I have operated the tractor with the new fluid and I can't tell any difference at all, not better and not worse. I guess I just saved a little money is all. By the way, the Chevron 1000 TFH is the same color as the Kubota UDT. Not sure if that means anything though.

 

[digdug1]

Here in Central Texas my Kubota dealer recommends and uses UDT. Dealer claims SUDT is not necessary. They sell UDT for $65 for a 5 gallon pail. I think I will give it a try. I will post results here.

 

[rdsaustintx]

Here in Central Texas my Kubota dealer recommends and uses UDT. Dealer claims SUDT is not necessary. They sell UDT for $65 for a 5 gallon pail. I think I will give it a try. I will post results here.

I know that dealer. Part of my purchase deal was supplies for my 50hr and they gave me UDT. I made them give me SUDT instead, per the BX manual.

The UDT will probably work fine, but I bet yer HST gets louder. If you're GST, none of this matters.

 

[actionaj]

I thought Kubota was going to stop selling UDT and only carry SUDT. I remember reading a thread this past summer about this.

 

[texbaylea]

I changed my L3130 to SUDT at the 50 hr service. Less whine and I thought smoother operation. According to what I read SUDT also has superior high temperature characteristics compared to UDT. I am sticking with SUDT or what ever they are calling it now.

Vernon

 

[nh DRAGON]

Well from what I have herd, Kubota could not convince or justify having udt and sudt to sell to the public in this hard times. So now they just have one, superior
udt. This is just what I have seen here and I do not know of cost but I would think it would be some were in between the two.

 

[johnray13]

I went with UDT at my the 50 hour service with my BX24. I did not notice a difference.

John

 

[Dargo]

I've made 3 fifty hour changes in Kubota products with hydro drives. No way in heck I'd ever use just plain UDT again. I've used both and without any doubt I can tell a HUGE difference between the two. Yeah, you may save $50 by going cheap. In my book, if $50 will make you or break you, you ought to be looking to sell your equipment rather than doing the 50 hour change.

Besides the HUGE difference in quietness, my machines ran smoother and shifted far easier with SUDT. I did use regular UDT on one at the 50 hour mark and by the 53 hour mark I'd drained it and went with SUDT. There is absolutely no comparison in either cold or hot weather between the two. My money spend on regular UDT was money wasted.

 

[gerard]

I've made 3 fifty hour changes in Kubota products with hydro drives. No way in heck I'd ever use just plain UDT again. I've used both and without any doubt I can tell a HUGE difference between the two. Yeah, you may save $50 by going cheap. In my book, if $50 will make you or break you, you ought to be looking to sell your equipment rather than doing the 50 hour change.

Besides the HUGE difference in quietness, my machines ran smoother and shifted far easier with SUDT. I did use regular UDT on one at the 50 hour mark and by the 53 hour mark I'd drained it and went with SUDT. There is absolutely no comparison in either cold or hot weather between the two. My money spend on regular UDT was money wasted.

Gotta agree with you - the cost for the super UDT spread over the oil change interval, is just too minimal to worry about. That said, I use amsoil instead of super UDT. Cost is about the same but the amsoil is synthetic and should have better cold flow and high temp resistence properties, and I've been pretty happy with amsoil products.

 

[digdug1]

Kubota HST Filter = $71.20
Kubota Hydraulic filter = $40.39
Kubota Engine Oil Filter = $10.38
Rotella 15w40 (6qts) = $19.00
Kubota SUDT (5 gal) $120 X2 = $240
Kutota SUDT (2 gal) = $62

Total = $442.97
x.0825 (tax)

Grand Total kubota oil change = $479.51

Maybe Dargo is right!...I cant afford this machine!!