Maybe, maybe not. Viscosity Oil has blended and packaged oils for CNH as long as CNH has been around and for CaseIH, IH and New Holland before that. Some of these relationships transcend the bean counters.
That's right; these relationships are convoluted. From what I can find, Viscosity Oil seems to be is a blending and packaging plant that blends & sells to the huge multinational Corp AMBRA OIL.
Located in Illinois, Viscosity Oil doesn't do any refining. It seems to operate as a division of Ambra, specializing in blending GL-134 trans-hydraulic fluid ....mostly for sale in the US & Canada. Viscosity Oil only has a few employees.
Ambra is a huge multinational Corp. that is the original refiner of all kinds of high grade oils and claims to make the "only oils recommended by New Holland".
https://www.google.com/url?sa=t&rct...vice-oil.pdf&usg=AOvVaw0SWGNx3CVfsETcTpt1WcZX
Just to close the loop, my local Kubota Dealer uses Ambra's New Holland GL-134 trans/hydraulic fluid instead of Kubota oils when servicing customers' Kubotas in his shop.
The Kubota dealer told me that his experience is that Ambra GL-134 runs quieter and costs less than the Kubota Branded UDT Lubricants.
That's the same Ambra GL-134 that is blended and packaged in the USA by Viscosity Oil. He can buy it in 50 gallon drums.
Our Kubota
M59 which is a heavy TLB with multiple hydraulic pumps all running a lot of flow. So just for fun, I tried Super UDT and then the Ambra GL-134 in it.
It was an expensive experiment to change the filters and oil, but my dealer was right. The difference in noise level between the two brands of oil is instantly noticible.
I'm not an oil guy and have no idea if less noise translates to less wear on the hydraulics, but it sure makes working the tractor more enjoyable.
rScotty