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I have heard some horror stories about Bosch Platinum plugs breaking down and loosing a side or ground electrode. Although I did run Bosch +4 Platinum plugs in my Escort 1.9 EDIS engine and it seemed to run alot better.
When I first bought my VX some silly dilly had ZFR5F-11 plugs in her and a 1/2 clogged PCV valve, the cat also was completely plugged.
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