Ok, I just got hold of a 92 Pathfinder, V6 5 spd a few days ago. Test drive went fine, drive around went fine. Drove about 40 miles at about 80mph and did fine. I finally drove it home (120 miles at about 75mph) and I noticed a ticking coming from the motor upon exiting the freeway. It increased and decreased with RPM. I added Lucas Oil Additive (previous good results w/ other vehicles) to see what would happen. Ticking almost completely disappeared. I can hear the noise on idle after the truck has sat (regardless of air or engine temp) for any period of time. I can also hear it while in motion if the trans is in one of the first 3 gears if the motor is cool. I don't think it is a lifter or pushrod cause it started suddenly, but with no loss of power and no change in the "feel" of the vehicle. Intake gasket leak? Something about these pathy's I don't know? Thanks in advance.