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#1
08-20-2002, 10:23 PM
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Bosch Spark Plugs
Hello,
What is the difference, if any, between a H8 DC, and a H8 DCO Bosch Super spark plug? My '91 190e 2.3 manual suggests the DCO, but some say the DC. Thanks, Randal
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1991 190E 2.3 SOLD 1972 911t 2.4 owned since 4/80 300,000+ miles SOLD 1999 C43 Merlin XLM, All Ti, 17.5lbs. 
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#2
08-20-2002, 10:53 PM
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The "O" indicates a heavy duty electrode. I recomend the "O" series where ever available, regardless of what the original spec called for, so on an older model if it calls for a H8DC, I would recommend the H8DCO. If the "O" plug was not available I would feel fine using the original H8DC though.
Gilly
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Click here to see a photo album of my '62 Sprite Project Moneypit (Now Sold)
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#3
08-21-2002, 02:57 AM
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Gilly Same advice for an '87 190E 2.3?
Jeff
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'03 E320 Wagon-Sold '95 E320 Wagon-Went to Ex '93 190E 2.6-Wrecked '91 300E-Went to Ex '65 911 Coupe (#302580)
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#4
08-21-2002, 06:47 AM
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Yes, any time there is a Bosch plug available with the identical part number, but with an "O" at the end, use that one with the "O".
Gilly
__________________
Click here to see a photo album of my '62 Sprite Project Moneypit (Now Sold)
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