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Yes, I recommended to do so at this mileage. The fluid required is VW #G 052 162 A2 this is a one liter bottle you will likely need 4 liter bottles I would purchase 5 with the understanding that you may return any unopened bottles. I recommend you also replace the oil pick up filter as well. If you should choose to do so, purchase the fluid, filter and a gasket. You should also inspect the vehicles fill plug before purchasing parts to see if you will need an new protective cap or a pump to pump in the fluid which you can purchase at most parts stores.
The procedure would be to remove the drain plug on the left rear corner on the bottom of the transmission oil pan. All the fluid in the pan will not drain out, unless you remove the tube going up in the middle of this drain (inspect this tube when you have the pan off, this is the level tube). If you are replacing the filter, this step is not necessary and you can simply remove the pan. Next you want to remove and replace the filter. You should also clean the inside of the pan and the magnets inside. reposition magnets to there original locations. Reinstall the pan with a new gasket. The fill port is located on the left front corner above the pan. If the plug has a spring retainer it may be reused, if it has a plastic protective cap, it should be pried off with a screw driver and replaced with a new one when finished. Pump it 3 liters of the fluid. With the wheels off the ground, start the engine and run it through the gears to expel any air in the system. When the fluid reaches a temperature of 35c-45c it should dribble out of the drain plug with engine RUNNING in park. A scanner is preferred, but an infrared temperature gun reading the pan works well enough. I open the plug as it is warming up idling, if not fluid is running out, I top it off until it does so. Then wait for the transmission to attain the desired temperature and reinstall and seal the drain plug BEFORE shutting off the motor. Your done.
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