Touareg: 2012 V6 TDI
Join Date: Jul 2014
Location: N. California
Second Vehicle: too many to list
Thanked 3 Times in 3 Posts
T3 Transmission flush idea, with wonderful drawings.
Excuse my crude MS paint artwork, but this is an idea I had to flush the transmission fluid in my T3 8 speed tranny. It comes from the same method I used to use to change the tranny fluid in my R50 Nissan Pathfinder. However with the Pathfinder you would just allow the cooler line to dump 2 quarts of old fluid with the motor running, turn off the motor and add 2 quarts in the fill hole... rinse and repeat until the fluid came out new and clean.
Since we don't have a dipstick tube to fill from like the Pathfinder my idea here to essentially replace the transmission cooler temporarily with two jug's. One empty to take the old oil and one full with fresh new tranny oil. Start the car with a hose connected to the inbound and outbound flex lines at the connection to the radiator as pictured. Start the car and the tranny fluid pump will do he rest of the work, dumping old dark fluid in the empty jug wile sucking in new red fluid as needed, just as if it was cycling through the cooler itself. Once the "old fluid" jug starts getting clean fluid dumped in it, you are done. Put it back together then do the proper procedure to verify the fluid levels. I.E. 86 degrees and pull the bolt with the overfill tube.
Anyone see a reason this won't work?