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:
bosch platinum+4 plugs 420 sel
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10-11-2002, 01:36 PM
cincuenton
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Dittos, all the way around!!
Myself, just sold my well-maintained 88 420 SEL. Last year, put the plus-4 plats in them. A big mistake!!
They ruin the car's idle and low end torque, etc.
Stick with the copper plugs. No question about it!!