I have a 1999 Jetta IV, with the regular 2.0L engine. When I first turn on the car, and put the car into drive or reverse, the transmission often slips, and often revs out without actually pulling the car for a couple of seconds. This same behaviour will happen here and there within the first 5-10 minutes of driving ... when the car is warmed up, the problem goes away. When the car is still cold, it'll slip and catch sometimes when moving off, and between 1st and 2nd gear.
I called my local VW dealership to ask about the transmission fluid, and they said that it was a lifetime fluid, and wouldn't need to be changed. What can I do to fix this? Is this a sign that my transmission might soon need replacing, or does it just need some maintenance? Would would you recommend? The car has almost 190,000 km on it.
Any advice would be much appreciated.