The rubber gasket probably got stuck to the block when they removed the old filter. When they put the new one on it likely pinched the old gasket but seemed tight to the tech. I find when dealing with dealers you almost need a friend working there to get decent service. Make sure to fill out those questionaires that Chrysler sends out as a follow up to your service. I know if you hard mark the GM ones the dealer always phones to see what they can do to make you happy.
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