2001 Dodge Caravan "replacement cork gasket gas cap" Questions

...cork gasket around the cap, if it looks worn, replace the cap..Most of today's modern vehicles have pressure regulated gas tanks, even having a cap not secured correctly will affect the operation of ...

...gasket allowing combustion gases to enter the cooling system. The best way to tell is with a combustion gas leak detector. They look like a dual chamber turkey baster with a colored fluid in one ...