The best way to change the Rear Gear Oil..and easier than I thought
The first time I changed the rear gear oil on my 2006 GT I tried the tube/syringe method.
Since the Ď06s have the oil plug at the 3 oíclock position this seemed like the way to go.
Of course I checked the GT forums and behold it was posted the best way to do it and also itís the BMW shop way too.
Simple really. With the rear wheel off (I also remove the exhaust for easier removal)
and a oil pan underneath simply
Releasing Paralever link at rear
. Use a strap to secure the rear.wheel drive to the rear frame.
. Remove bolt with washer and nut .
Draining oil from rear wheel drive
Remove oil drain plug.
Release the retaining strap enough to pull the pinion shaft out of the propeller shaft and pivot the rear-wheel drive down.
(this may take a pry bar of some kind to gently slide the pinion gear out of the U-joint)
The rubber gaiter will probably need to be pried away from the shaft housing. Careful not to damage the inside plastic rings on each end of this gaiter.
Drain off the oil.
Lubricate the splines of the shaft (hey while you there, right) I used Honda Moly 60.
Put it back together:
Check that plastic inserts are correctly seated in flexible gaiter
.Lubricate the mating surfaces of the flexible gaiter.
Snap flexible gaiter into the threaded ring of the final drive. (basically make sure the gaiter is in place and the keyed part is lined up)
(Plastic rings should stay in the gaiter so reinstalling them is moot)
Swing the final drive up and introducte the universal shaft into the shaft stub.
You can slightly pull the shaft towards the pinion to get alignment but make sure it still engages the transmission. Try rotating it while you shift the gear pedal)
Position flexible gaiter so that the lug engages the swinging arm.(That keyed part of the gaiter)
Check that the flexible gaiter is correctly seated on the swing arm and the final drive.
Of course while you are lifting the swing arm up and doing this shortening the strap will hold the shaft arm in place at any point along your project.
Reinstall paralaver link bolt and nut.
Now install your oil.
I used a large syringe and a flexible IV tube to get it in there without spilling.
I put 180ml in and Iím not sure how you could add more since any more and it would just flow out the 3 oíclock drain hole that you are using.
Install oil drain plug.
Put the wheel back on and youíre done.
Much easier than I thought and better piece of mind knowing all the oil is drained and that I didnít get a IV tube jammed in there trying to suck oil out.