Oil cooler adapter install=No oil press


I installed the oil cooler adapter and lines back on the motor. Now I'm getting no oil pressure on start up. Lots of clanking. Shut her off. What to do??
Pull off the upper oil cooler line and fill it with oil. I've done this several times with success. Phil
I'll try that tomorrow. It is a new radiator with "0" oil in the internal cooler. I don't want to ruin the motor cranking it dry. How long is OK before damage occurs. :confused: