Yes, limits for ingredient content, e.g.. how much zinc and phosphorus,
which is what was being asked about.
----- Original Message -----
> The limit is so they don't foul cats (hence the problem); which is a
> performance spec re emissions.
>
>> ----- Original Message -----
>>> No, these are performance specs, not ingredient specs. And flat tappet
>>> engine wear is no longer part of the performance spec, apparently.
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