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Found 1 result

  1. Folks, On another forum I follow, there is an ongoing thread on transfer-case failures and replacements. Some people have experienced multiple failures, many people none whatsoever. One person showed a photo of his repair order, which included something interesting. Besides replacing the transfer case, they also replaced a vent hose for the transfer case. When he asked his service adviser - the adviser said Porsche had issued a WB (workshop bulletin) instructing them to replace the vent hose when the case was replaced. The open end of the vent hose was now located above the level of the transfer case, where before it ended low down on the transfer case. The explanation for this by the SA was that Porsche determined that moisture was getting sucked into the cases and causing fluid contamination. Since the Xfer-case uses a multiplate wet clutch (much like a common design on motorcycles) - I can see where moisture might cause corrosion or rust that could cause the clutch to bind and work erratically - giving the symptoms described on failing cases. So - I'm going to order and install the revised vent, and also do a preventative fluid change at the same time. Since the Porsche fluid is silly-priced (about $80/liter) - I thought I'd ask if anyone has an alternative that they've used. There are several "transfer case" fluids that I've seen mentioned as alternatives, but I'm looking for first hand experience here.. who has used what? For those interested - the PN for the revised vent is: 958-301-047-10. Roughly $30 from Sunset (least expensive I could find.. but I'm giving my FLD* a shot at it too..) TIA! * FLD = Friendly Local Dealer
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