Whats the oil pressure on a d16z6 at idle??????? my oil pressure drops after warming up it gets to about 45- 50 psi and then drops as the car warms up all the way down to like 8-15 psi whats that mean??? were is the pressure suppose to be at . at idle?????? i checked all bearing and oil pump pick up its all good but i think it might be pump .... or is it the oil i use 5-30W should i use thicker oil its a 93 civic ex d16z6 Turbo'd