Middle&Final Gear oil

[Sandy H]

Hi
I put Pennzoil gear plus gl-5 sa-8--w-90 in a year ago.
It was a nice gold color.I have gone about 3000k since then.
I checked it last nite and it is starting to go black in color.
Is it time for a change?

[red bandit]

Since the season is almost over for us northern people. If it were me... I would make changing the gear oil part of my winter maintenance.

[barberad]

In the links section there was a reference to an online manual in there. I don't remember the recommended change duration from my manual, (I just changed my M/FD oil.) but it is in there.
Hope the link works: http://www.sendspace.com/file/0hrf4c

[bikerphil]

mid drive oil

When in doubt, throw it out. I change my mid + final drive oils every 5K. 85W90 is the recommended oil.

[TADracer]

You are probably OK as long as the level is right. It is not uncommon for the stuff to turn colors. Since it is in a closed system and not subject to combustion blowby and acids like engine oil it should not degrade as fast. I change mine every Spring when I do a major 'go through everything' tuneup.

I use 85/90 full synthetic for the gear drives.