Last week, while driving down the highway, my '89 FJ-62 lost oil pressure (failed low) and suddenly began knocking real bad. I pulled off the highway and shut it down. I had it towed home and here is what I've determined thus far: 1) Plenty of oil in the crankcase 2) Will start and probably continue running but knocks fairly loud 3) No leakage Have not drained the oil yet but will check for metal. Any ideas? Hopefully, the engine is not shot but if it is, wondering if it would be better to replace with new or rebuilt straight 6. Or, should I throw a 350 in it? Any suggestions from anyone been down this road before.