Just a quick question:

I recently changed to a synthetic blend oil based on the ambient temperatures here in AZ (sometimes gets up to 120 degrees in the day). Using Quaker State 20W50 because it never gets colder than 85 degrees here and I was afraid of a lower viscosity oil getting thinned out in the heat.

In the winter I was using Castrol 5W30.

In the winter, my typical idle (900 rpm) oil pressure on startup was 50 PSI and would drop to 20-30 once the engine warmed. With the new oil, typical idle pressure is 70 PSI and drops to 40 once warm. Does this sound normal? It looks really high to me...