i have an 88 camaro with a 2.8 i know camaro really shouldnt have a v 6. well back to the question. when i start it the oil pressure is about 80 then after about 5 mins. it goes to 20 the farther you go the more it drops pretty soon you have to hit the gas all the time to have any oil pressure what could be the problem i think it is the oil pump but i dont know really hopefully someone will know for sure.