Hi all. So I have learned that my '01 Avalon may have a oil pan gasket leak. Not seeing any drips under or losing noticeable oil between oil changes, but smelling oil burning at times when I slow to a stop or shut the car off. The car has brand new dealer installed Toyota valve cover gaskets and they are dry as a bone, so that isn't it. One shop said it was 5 hours labor and would run me about $475.00 to replace it. Does this sound accurate? She also asked me if it was the lower or upper pan?? I didn't realize there was more than one. Any info/advice or links how to do this would be greatly appreciated. Google search has brought up very little.