NGK copper... posted by 92naz32 on May 01, 2006 at 12:37 PM
Message
They work really well for me. I drive like a granny, for the most part, and I keep inspecting the plugs - 15,000 miles (!) and no sign of deterioration yet. It is nice to have the theoretical protection of them giving up before the pistons under detonation.
Kez
"it won't feel that fast when you first step on it. this will deceive you. then it will kick your ass." - PennStateZ 6/3/05
"I retrofitted my Z31 by dumping what was left of the R12 into the atmosphere" *Member name omitted for his protection - 10/17/04