Oil Pressure

[Shaggs2Dope]

When i start my car the oil pressure reads (about) 30 to 35. once the car warms up though it drops. (about) 0 to 15 ??? is my gage messed up or is the car gunna die? and i did just get my oil changed, 5Q

[Trash man]

does the motor make any knocking or slapping noises when the gauge reads 0? if so, change ur oil to 20w-50 and see if that helps, if it does, u either got a bad pump or alot of clearance somewhere. but if the gauge is reading right, im guessing the pump is on its way out