Search the Community

Hi All, My A4 B7 has decided it wanted some attention so decided to leak auto transmission oil into the near side of the engine bay. The near side was covered in oil, it looked as if the oil had shot up from the 'drive shaft' area and managed to reach the coolant header tank as liquid was dripping from it { may have been coolant fluid} i cleaned as much oil as i could to trace it back but did not see any direct sources for the oil. The car engaged gears fine, there was no sign of 'mayo' in the oil cap or dip stick. {no lights on dash} Wasn't able to get the car towed home so took a slow drive back after rush hour was gone. It drove ok but as it eventually came to a stop, it then seemed to struggle to pull away {likely due to the lack off transmission oil} once it was back home, checked the oil again and it was fine, checked the header tank and it was full of mayo, a sure sign oil had mixed with the coolant. Did some research online and didnt get any luck so decided to strip the coolant system as it would need flushing. One but of advice I got was to check the flow of the radiator. I blocked off the return flow and filled the radiator with water and could see it slowly seeping out of the oil feed and return points. From My diagnosis it seems that the radiator has failed and caused the oil feed lines to the gear box to over pressurise. The part im struggling with is finding where the oil has escaped into the engine bay from the autobox. Has anyone had a similar experience or know where I should look next? The plan now is to install a new radiator after flushing the coolant system, top up the auto box with new fluid {not sure how much it takes} Any advice would be appreciated thanks