Heres my take on petroleum fluids, I lived within a few miles of a Pennzoil refinery (closed now) all my life. I know several people from plant workers to truck drivers that worked there. All oils are manufactered to a set of standards. I was told as most of you are aware that oils are made to meet these standards set by the API. Thats why manufactures list the fluids required for their equipment to meet standard such and such. IH did not have their own refinery to make these fluids so that means they were made by some other mfg. From what I know the oil and lubes that go into a Pennzoil. Quakerstate, Walmart, Dollar General, ect, they all come out of the same tank, same API standard, just marketed by another company. I had one truck driver tell me that one thing they did do after loading a tanker was go into a small shed and fill a small container with some other fluid and dump it into the tank, that made that load something else. I know nothing about chemistry and that is probally the difference in Hytran and others. But remember, all the other tractor mfg. out there probally use something other than Hytran and still have tractors out there as old as our tractors. In my opionion, just make sure the fliuids you use meet or exceed the API standard, the Standard is the same reguardless of the Mfg. One other thing I learned about 80/90 gear lubes is that one (can't remember if it is GL7, or GL8) will harm soft metals such as yellow brass. So check the containes and buy what you want, I doubt you will harm anything as long as it meets or exceeds the standard. I found this out when looking for a lube for the gear case on my bike. Use the money saved to buy gas. One other question, how is the water getting into the rearends on these tractors. I have never seen water in rearends unless a seal was bad or it set in water for a long time? At least when I was doing a lot of off road in trucks that is.
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