Old - yeah it's at least 10 years old. It may be time for a new one but not too worried about it though because the tester is reading low - in my favor.
Member of the Dropped Valve Seat Club.
Replaced #4 Piston, Rings, Rod+Bearings, AERA Re-Manufactured Cylinder Head and a light Hone. Then CLEANED the hell out of everything.
40k+ miles, now jinxed?