1998 S70 T5 Denso Iridium Spark Plugs

[erikv11]

FR7DPP runs about $7 here, FR7DC about $3.

[Cookeh]

Blimey. In that case I see why frequent changes of coppers could make sense.

[MoVolvos]

Blimey. In that case I see why frequent changes of coppers could make sense.

When I had the 98 S70 T5 I used the copper. In the other cars, both Honda at the time I used the Iridium. They worked great in the Hondas. The engine was peppier and much quieter than what were in there previously. I guess the consensus from reading is copper will not give any problems whereas the others are hit and miss for some people in the HPT's.

Have these in the 03 GS300. Suppose to be lifetime and probably been in the car going on 9 years.
https://extremespark.com/

I can't remember a time I didn't run the highest grade of gas in all the cars though. Never had a CAT replacement in any of the cars due to Emission issues and a few were in the 200K's.

*