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.