My original "single platinum" plugs failed around 10k miles. One bank completely shot (big surprise)

Went to the +4's and they lasted maybe 6k miles. 1 bank gone & the other bank badly worn. Got my money back!!!

Went to AWSF22FS (double plat, fine wire, step colder) and checked them the start of last summer (12k miles) and they looked brand new & gap about where I set them.


2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.