At 100,000 miles, appears to be time to replace both distributor caps and rotors, according to my independant tech. Says "green stuff" is growing in there . . .

Looked at Parts Shop, has the best prices around, but I'm confused since there is listed a "rotor adaptor" listed in addition to the rotors themselves.

Does anyone know if in fact I need the adaptor?

thanks,
steve

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Steve
'93 400E