Oil pressure on my 87 MAXIMA varies from 5 psi at idle to 60-70 psi at driving speed. Just need an estimate of expected oil pressure variations, idle pressure and pressure while driving, for a normal MAXIMA engine with 69K miles.
Occasionally the pressure reads 0 psi at idle. At 0 psi, the oil can symbol flashes. Oil pressure increases immediately when engine RPM is increased. Could this be an oil pump problem [relief valve]? Still not sure if the Oil Pressure sensor/sender is really bad.
A local mechanic looked at oil pressure readings while engine was idling and at fast throttle setting and concluded that 'flashing alarm' was not a serious problem because 60-70 psi pressure was present at 4000 rpm with adequate crankcase oil level. He suggested doing nothing except change engine oil and filter. _Presently using 10W-30 oil. Would using
30W oil be advisable at 69K miles?Not ready to spend $65 for oil sensor plus install labor if the sensor is not the problem.
Thanks for any thoughts or info. Dave_s