Can anyone tell me the proper oil Pressure when it warms up at idle mine use to be between 15-20 psi and now I've noticed it around 10 or a hair above is that too low? When its cold and just started its up around 40 and use to drop 15-20 when up to temp and driving at idle and then goes back up around 40 on acceleration and now Like i said I've noticed it a hair over 10psi at idle anyone know whats the normal range? Thanks.