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Q: LEAKING GASKET ON WINDSHIELD FLUID TANK on 2000 Volkswagen Passat

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I HAVE REPLACED THIS GASKET WITH AN OEM PART 443955465 (THAT LOOKS SMALLER) AND STILL LEAKS AROUND THE GASKET Help!!! even tried permatex sealant on both motorside of seal and tank side any sugestions? my local vw servicer is clueless
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The only thing I can think of is to check the tank itself, many German vehicles have much larger washer reservoirs than American and Japanese counterparts. That larger reservoir size can cause stress fractures, from the heavier load, so what you might think is a seal leak can be a split in the plastic at the area around the seal. If the reservoir is not mounted correctly, it can crack due to excessive movement. The only way you may truly find the cause of the leak, is to totally remove the reservoir from the vehicle and leak test it. Good luck.
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