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DIY Transmission Fluid Change

sgt pepper

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I am a new member and was looking for anyone who may have changed the transmission ( or Gearbox) fluid in a 964 C2. I have some basic information and know where the drain and fill points are, I also know the volume and have some Swepco 201 80/90 fluid or Lube, which has some heavy weight recommendations across the Porsche racing community.

My biggest problem is I will be doing this operation on my drive, with only basic ramps and axle stands to get any operating space under the car. I can imagine the access to the drain point will be OK, but I can see that filling may present a problem, as I don't think it will be possible to pour in the oil with the transmission in place, I imagine it will need to be pumped or squeezed in somehow ?

If anyone has any experience or insight into this task, any advise would be appreciated ( please do not tell me to take it to a dealer, that would be to easy !)

Many thanks

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the drain is on the bottom and the fill is on the side, sorry no pictures to back it up.

one thing that I have found is when you put swepco in a car that has a lot of mileage it makes the syncros too "slippery" and you get gear grinding since the syncros are not slowing down the gears for engagement enough

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I used a long piece of tubing and threaded it from the fill port through the left rear wheel well. I squeezed the bottle and used gravity for the rest. This was a PITA and would highly recommend trying a pump. I will for my next go at it. With regards to the Swepco, I've had the same experience.

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