unless it is like kfc original recipe and the secret ingredients are a well guarded item, i can't imagine there not being an aftermarket equivalent. it would seem that there is a market for it since most aftermarket hydraulic oil brands are $30+ a gallon cheaper. you would think that by now there would be an equivalent aftermarket solution, because so many smaller jd models use it now. i would assume that the entire production line of that tractor did too, so that dates it at least a few years before. I don't know how long the low viscosity hy-gard has been out, but my 770 is a 1998 model and it specified it then. fluidĪn oils wieght rating iso 32, iso 46, iso 68, 5w-20 and such has little to do with the additives that make the oil what it is intended for. I would have serious reservations about using it as a tractor/hyd. ISO 32 fluid may be fine for gear transmissions of a light duty or just a plain hydraulic system. I know first hand that the finals that ran in the gear oil had considerable LESS gear/bearing wear as compaired to the finals that used the THF, with same amount of hours. fluid in them often have large hydraulic driven motors that power a seperate final drive of some sort that is a totally seperate unit itself that takes a gear type oil in the final.ĭepending on the year in IH 1480/1680 combine finals used "hy-tran" IH's tractor hyd fluid or 80w-90 gear oil. Large tracked and other hydrostactic driven machines that use iso 32 hyd. oil SHOULD work in a hydrostatic drive system but, a 1023e has just a little more than just a hydrostatic drive system to operate with one oil.
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