I ran the NGK BCP5ES plug gapped at .032 for 12K miles and checked the gap. The results were very clean plug the wear had the gap out to .036. the recommended chnge interval is 15 k miles. average mileage 24mpg hwy at 80 mph.
Quote:
Originally Posted by jsap
Thanks guys for the PN. But if anyone's had trouble with NGK's, I've heard that there's a difference between US-made and Japan-Made ones. When I used to ride bikes (I'm a UJM fan), my friends swore on the Japanese NGK's.... But UJM's are cheap, and my SL is no toy to screw with, so I just might stick with Bosch unless I hear any testimonials for Japanese NGK....  |