Gearbox Lube Change

[JFP in PA]

Originally Posted by mike914

Hello Everyone

I have a 2001 Base Boxster with 104000 miles on it.

In the mornings I can feel notchiness from the shifter when shifting from 1st to 2nd gear.

Once the fluid warms up, this goes away.

I would like to change out the gearbox lube with Motul300

In researching this procedure I found one must remove the rear cover and diagonal support braces to get access to the transmission.

Will this mess up my rear alignment?

If so is there any way to prevent this from occurring?

Thanks for any advice


Mike

Yes, you only need to remove the plate to access the gear box, and no, you will not need an alignment afterwards. You may need a small ratchet strap to pull everything back into place to get the bolts in when you are done.

While you have the plate off, it is a good time to add a 2 1/4 diameter hole under the drain plug so you won't need to take anything off in the future.

I would also be very circumspect about using anything but the factory fill in your car. The problems with using aftermarket gear oils have been written up here and on other websites many, many times. Porsche used a unique lubricant in these gearboxes that no one in the aftermarket has ever duplicated, and it is a full synthetic product as well.