[s-cars] Which Spark Plugs?

[Kevin Barnett]

Just to share my experience.

F5DPORs worked fine with stock coils for me.  25k change out interval.

Upgraded to LS2 coils, F5DPORs had a higher failure rate, requiring a 15k change interval.

Switched to NGK Iridiums, and the LS2 coils burned the electrodes off the plugs in ~10k miles.  Second set, same results.

Switched to tri-electrode copper plugs, no failures, and no issues with 15k change intervals, and they are a lot cheaper.

Best regards,
Kevin