Greetings,
My 2003 Honda Pilot (3.5L V6 V-TEC, about 25,000miles now, have changed oil @3,000mile religiously and currently using Mobil1) makes this faint, but still noticeable pinging sound whenever the car's under moderately to hard load between 2K-3.5K RPM. I think above the 3.5K RPM, the...