I fixed it on two 95s I had (both over 200k at that time) using a jug of Seafoam in the crankcase. Never put the truck in gear but just revved it from idle to ~ 2k for about 10 minutes, In both cases 10 min was about 5 min after the tick had stopped.
Both went 10s of thousands more miles after that on Rotella 5w-40 after that.
For sure the problem can be wear but more often seems to be gunked up lifters.
Both went 10s of thousands more miles after that on Rotella 5w-40 after that.
For sure the problem can be wear but more often seems to be gunked up lifters.