Changing plugs on a 300M

[G-MAN]

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Is the 300M a rear wheel drive? I thought it is a clone of the Dodge Intrepid.

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The 300M wasn't a clone of anything. It was based on the LH platform, as was the Intrepid, Concorde, and LHS. The LH platform was designed to be FWD, RWD, or AWD with a minimum of changes needed on the production line. In the end Chrysler chose to go with FWD across the board for all LH models. Though at the time of the Mercedes takeover, development of the LX platform was well underway and it was based on the RWD variant of the LH. When Mercedes came in they scrapped that LX and started a new LX design from scratch based on the E-Class Benz platform.

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So is this FWD or RWD? Web searches indicate it is a FWD but from the photos, the engine is NOT transversely mounted.

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Did you read what I wrote?

 

[Patman]

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Why aren't you guys just using iridiums?

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Why use them? Do you think I would be able to detect any performance difference that would justify the roughly 3X price difference?

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Yes! I was using NGK copper plugs in my Corvette and changing them every 6 months or so, and on my last plug change I decided to go with NGK iridiums instead. I notice better low end throttle response with the iridiums! And I'll leave them in a lot longer than 6 months now, so the extra cost does not bother me. I got them on sale too.