[ramblerdan]

Good info, Dom. Still, a magnetic plug could provide important diagnostic data cheaply in the event that one of the few ferrous parts does shed.

I got two magnetic plugs (also fits manual tranny) from C.G. Enterprises here, part 1085M. Costs US$3.45 each and takes a 14mm "gasket" (crush washer), part 2402, US$0.19 each.

Note that these have a regular magnet, not the strong rare-earth type.

 

[ramblerdan]

I couldn't find a plug with a rare-earth magnet. But that was in 2006; now, who knows?