Oil pressure is crazy high!

My 340 had readings of nearly 100 cold, and almost 50 hot with 10w30. This for the first years of running. This was with a Mellings HV pump and using a Stewart Warner gauge (one of the less expensive ones.) About two years back I changed to an Autometer gauge and readings since have been closer to 50 cold and about 20 warm, less at hot idle.

Definitely a huge change in readings when I swapped the gauge!!!