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Hails from the land of rust!
Joined: Sat Oct 21st, 2017
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Ford had to add them as part of their Caf© standards (emissions targets) it's the same reason that engine suddenly started specifying 5w20 instead of 5w30.
When I say helps when cold, I'm only referring to the emissions, nothing else, basically it's a few minutes from a cold start before the main cats are hot enough to work at full efficiency.
The cat is a metal container, that you can see from the outside, inside that is the honeycomb structure, that is essentially a series of tightly packed tubes from one end of the cat to the other. Just smash them out.
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