What??? A torque converter in a Porsche you say?! Well I have one of those and all the Porsche dealer service techs I've talked to claim that the ATF fluid in the tiptronic transmission is a "lifetime" fluid and the flush interval/filter change is 108K miles or 12 years whichever comes first. Now I track my cayman and I'm a bit skeptical of the lifetime quality of this fluid since oil/lubricants break down eventually owing to heat right? Also, during my online research I found that the same...
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