V6 nissan motor 230,000 miles, 6,000 miles oil changes since new w/Mobil 1. I drive 7 states so lots of highway miles.
Interesting point is it cold starts quiet. Once warm when I stop and come back one hour later they click for a couple of miles then quiet.
I added a pint of MMO and ran it 2,500 miles and then changed it to 5-30 Mobil high mileage with another pint of MMO.
It's quieter but what's strange to me is why does it cold start with no noise, but clicks after sitting warm for a while?
Thanks,
JU
Interesting point is it cold starts quiet. Once warm when I stop and come back one hour later they click for a couple of miles then quiet.
I added a pint of MMO and ran it 2,500 miles and then changed it to 5-30 Mobil high mileage with another pint of MMO.
It's quieter but what's strange to me is why does it cold start with no noise, but clicks after sitting warm for a while?
Thanks,
JU