you have a lift!!! My tech is kind enough to let me use one of his lifts so it takes the sting out.

The charcoal filter is one of those jobs but it doesn't need a lift! My car had about 98K when I changed it, about 1 year ago. The filter wasn't that bad but was very dirty.

The pre-filter (also charcoal) located on top of the blower is one that should changed. It's also a little pricey also but is a key filter. Thiss one is easy to get to; 15 min job.

Never have replaced or seen a cat replaced on these cars. I would think that it should last 150K+ miles. This is based on what I see replaced at my tech's shop.

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Regards . . . . JimF
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'94 S500 Cpe

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