Hi all, if i open up the boot on my 2wd saph, on the left hand side there is a slighth rust patch on a some kind of joint. Its the piece of metal that is straight and goes from the rear to the bottom of the windscreen. You can only see this when the boot lid is up and is on the side of the saph

As my motor is parked up i never thought to check the boot and there is slight mould on the carpet where its been leeking, how can i cover the rusty bit up so it stops the leek??

Cheers

Luke