80 weight gear oil

[Anonymous Poster]

My b6100e gear drive wants some gear oil. So I go looking for straight 80 and I can't find any. I have found straight 90 "green" (it says this right on the container..) but I cannot find 80. I am reluctant to put UDT in it as I can tell that there is gear oil in there and if it aint broke don't fix it. Is straght 90 GREEN what I want? I have heard to avoid 80w90 EP as it is bad for the brakes. Any ideas?

 

[StanInCalif]

I wouldn't worry about the difference in viscosity between 80 and 90 - My concern would be whether they want you to use straight mineral oil or gear oil. It seems like your manual would tell you this. -Stan