Checking the header tank for water level today, the pressurised cap, has basacailly fallen apart
from what appears to be rust from the top of the cap. This is the second one in approximately

12 months that I have fitted. Both being brand new, I am now thinking do not go on a long journey unless you have a spare one in the boot, which I now have. Has anyone else experience this, as my car is a 3.6, perhaps there is a stainless steel one that will fit, maybe peeps can point me in the right direction.
Regards
Phili