Gearbox oil

[watchman]

How often should the gearbox oil be changed on a 1150GS, or shouldn't it be changed at all, I suppose this goes for the final drive oil also. Many thanks Watchman

 

[Flipfly]

I change it every 6k usually. Diff oil get's changed at the same time or before if I've been off road/fording.

For what it's worth it's a 10 minute job so it's easy to do.

Buy yourself a manual

 

[terayon]

According to BMW it should be every 2 years, and the final drive is every 25,000 miles or 2 years.
But if you've been fording you will need to change the final drive oil more often

 

[mike wright]

Such an easy job you may as well do it every service....just fill it to the bottom thread of the filler plug...

 

[Noddy]

80/90 GL5. 1 liter for gearbox a lot less for the diff.

Haynes do a good one but I prefer the Clymer. Get one soonest.

 

[Gordon]

I use Halfords API Grade GL5 hypoid gear oil and change both the gearbox oil and rear drive oil at 6000 mile intervals (in accordance with the BMW handbook). Like stated previously, takes little time.

Cheers

 

[Global Rider]

Once a year is fine unless you get water into the system. (consider that a car might have it done every 4 years)

Same for the rear drive.

I use straight 90 as recommended by my owner's manual. The rear wheel drive gets the same with a mixture of 5% Dow Corning M Gear additive (moly)...since both my 03 and 04 GS Adventures came factory filled with a moly additive.