Ok guy brings his truck to me by word of mouth! says he had it 2 other places and spent 2k at first place the 4k at second place. then he tells me the reason he took it there is that the low pressure oil light is on. so lets see on this forum who can tell me why! this is for fun only i will give you the symtoms. truck runs fine but low oil presure light is on at idle it is a 2004 f250 work that has already been done. upper intake manifold i have no idea why! a oil pressure switch,oil presure switch plug,the entire oil cooler assy,egr valve and cooler,radiator,thermostat, so they spun the wheel of fortune and missed it so know its your guys turn i will answer this tonight!!!