I did the service today at 15,300 miles.
Just a couple of 7500 mile service vs 15000 mile service photo's.
7500 mile Intake #3 --- Very minor pitting this was the only problem on the 7500 mile service.
15000 mile Intake #3 --- Full Blow Aids--- look at the comparison.
New cam problems that didn't exist on the 7500 mile service. See pics below.
One more picture, if you stand far enough away they look perfect.
"I can't believe it's not butter".