The temp is your thermostat opening and closing it isn't anything to worry about really. VW tranny's scare a lot of techs from word of mouth from fellow enthusiasts. I have heard of cars never changing a tranny filter and lasting forever. Unless you have junk in your tranny fluid then I wouldn't worry about changing the filter.
--2002 VW Jetta 1.8T APR Chipped for 18 psi on 93 octane, APR 3" exhuast, 7" cone intake filter bolted directly to the MAF, ARP intake hose, Boost Guage, everything else completely stock. GONE
---2000 VW GTI VR6 stock motor Poly all around brake rotors.
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