|
Good question. I've never read that in an owner's manual!
Don't forget to also consider clutch wear. It's small, but it counts.
I'm not a doctor (I only play one on TV), but my sense is that the brief, relatively infrequent rich condition during re-start isn't a big deal to the cat.
But a persistent rich condition could overheat a cat and burn it out. (This happened to the previous owner of my first Firefly/Metro, who drove the car for over a year with the check engine light on for a failed O2 sensor and burned out both the original plus one replacement cat. Also as a result, he got horrible mileage.)
|