Can someone tell me what my oil pressure and water temp should be at for a 1990 mercruiser 454? My temp gauge for the most part doesn't move off of the lowest spot on the gauge while underway (about 100-120). It will rise a little bit when im in neutral. The oil gauge is reading anywhere between 18 and 30.. Just want to know where i should be and if there not right what i should check. Any help is appreciated.
