I have a 1987 Chevrolet Celebrity that on the exterior is in pretty rough shape but seems to run great overall. The car is only driven to and from work which is only about 4 miles each direction. So it is drive 8-10 miles a day 5 days a week. It starts great and doesn't seem to have any problems except for the flickering oil light. After about 10 minutes of driving the oil light will start to flicker whenever the car is stopped (i.e., a stop light or drive-through) As soon as I start to drive again it will stop flickering. This problem seems exacerbated on especially not days and it happens earlier than normal. It does have an oil leak so I check the oil often but this happens even when the oil is at a normal level. I don't really want to take the car in because it isn't worth anything and I don't really want to invest money into it. Any suggestions on what might cause a flickering oil light?