Hydraulic outlets on B2601 for log splitter

[PaulL]

I believe SUDT is synthetic, UDT is mineral. So if the fluid you have is synthetic it's probably something like SUDT by another name. I believe what we get in NZ is all mineral. I doubt it's because they can't get synthetic, I suspect it's because they think NZers wouldn't spend rthe money for synthetic fluid. Same reason you basically cannot get SSQA quick connects here - apparently NZers don't value those.

 

[TheOldHokie]

I believe SUDT is synthetic, UDT is mineral. So if the fluid you have is synthetic it's probably something like SUDT by another name. I believe what we get in NZ is all mineral. I doubt it's because they can't get synthetic, I suspect it's because they think NZers wouldn't spend rthe money for synthetic fluid. Same reason you basically cannot get SSQA quick connects here - apparently NZers don't value those.

In the US market synthetic vs mineral is a blurred distinction. Much of the 'synthetic" oil on the shelf is actually a highly refined mineral base oil.

As far as SUDT vs UDT goes:

1. SUDT has a slightly lower KV100 viscosity with a higher viscosity index (200 vs 140) which makes it a superior circulating oil in cold temperatures.
2. SUDT is formulated with chemistry that increases its water tolersnce. It absorbs a minimum of 1% water by volume without additive dropout, emulsification, or separation of free water. That helps reduce corrosion and keeps filters from clogging up.

Thats what you are getting for your money. Its enough to get me to open my wallet for the new HST but not the old gear drive.

YMMV

Dan

 

[North Idaho Wolfman]

SUDT is Obsolete by about 10 years.

UDT and SUDT2 are the only 2 options

UDT mineral
SUDT semi synthetic
SUDT2 full synthetic