First off I know this has been discussed before! With that being said I've owned two Mach1's and with my new one it's been a nightmare burping the system! Multiple shops not being able to do it!! Shops giving my money back or saying its a head gasket witch it wasn't!! My question is!!!! Has anyone else had a car that has been very difficult burping or is my car just the normal! My other Mach1 was easy!!!!