During some recent highway driving the oil gauge pressure dropped down to
- The oil level was ok and the pressure came back when restarted. The pressure dropped off at higher rpm. The temperature may have gotten hot but it did not boil over. I changed the oil from SAE 10-30 to SAE 20-50 because it was taking about 30 seconds to build pressure when cold starting. At this point at about 2500 rpm the pressure will drop to 0 but if left to idle the pressure picks right away. After 5 minutes the pressure pretty well goes to normal (beyond the mid-point) and the engine sounds tighter. Restarting the engine after a 10 minute rest does not create any problems. The engine is not burning oil nor leaking oil.
This oil pressure vs. rpm is all backwards. Can anyone shed some light on this.
Regards, RDL