Spark Plug Info
1. Use OEM Recommendation
2. Copper, 20k-50k miles
3. Platinum, 80k-90k miles
4. Double Platinum, 80k-100k miles
5. Iridium, 120k miles
A. NGK: Subaru, Nissan, Asian, Honda, VW
B. Autolight: Ford
C. AC Delco: Chevy
D. Champion: Dodge, Chrysler
E. Bosch: European, Audi, Mercedes, Porsche,