Quote:
Originally Posted by CP 1///M
I see that the service bulletin shows a transmission fluid change along with a rear diff fluid change every ~50K KM, any recommended duration for lower mileage cars? I didn't see any records showing either was flushed and replaced for mine, and at 23K KM transmission definitely felt more notchy than when I picked up the car at 16K KM. Only found the quantity for the transmission fluid (2L) but not the diff fluid - anybody knows the going price for stock fluid from dealer vs Pentosin FFL-3 in North America (west coast)?
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I think BMW NA says to change the fluids every third oil change or 45K miles. I still think thats way too long. I would change your fluids now - especially since you say the gearbox feels more notchy. The diff uses 1.2l You can buy the Pentosin fluid from any Porsche dealer.