I've had some trouble with my lifter pump and so I removed the back seat of my Mk1 Golf/Rabbit to access the pump and fuel tank.
As I was removing the 'lid' to access the tank the aged seal/gasket thing around this lid disintegrated.
Now, I've noticed a kind of briny, almost salty smell emanating from within the car at times.
Is this due to fuel going bad from being exposed to air now that there is no gasket?