Rear diff oil change

[craigv78]

Drained and replaced over the weekend, I think the recommended interval is 15-16k miles? - Mine's done just over 18k

Thick greyish-silver sludge where the oil should be, now nice and clean oil.

Probably a placebo effect, but seem to be getting slightly better MPG now?

[BigAlan]

I used to change mine every 4K when I serviced the bike, for the little amount of oil it takes it was worth it.

And don't overfill.

[virginiajim]

+1.  If it runs out you got way too much in there.  Probably within a 1/4 inch or so and you're fine.

[bobbyspit]

what spec oil you guys using for the oil change?

Rob

[Boomer]

75W90 hypoid gear oil.
Any brand will do.

[bobbyspit]

GL4 or 5?

[Boomer]

GL5 per the service manual.
Don't you have the service manual?

[bobbyspit]

Only the electronic one.

Which I find difficult to navigate.

THanks

Rob

[virginiajim]

I use the Mobil1 synthetic 75w-90.  Have been for 10 years now.  Change it at every oil change.