The doors have multiple drain holes ex factory
The window glass seal is never designed to be 100% waterproof
However a new rubber seal will always help if the old one has deteriorated.
Gummi Pflege is basically silicon. It helps keep rubber soft and pliant. It is excellent to help prevent doors freezing closed in Winter.
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XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65.
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