A friend of mine has a '97 STS with 125 K miles. He had the oil changed at the local dealer on Aug 13th. About a week or so later when he stoped at a light he got the "ding ding" chime and "low oil press" light warning, as soon as he added a few RPM the light went out. It was getting worse as time went on., If he put the shifter in nuetral the light would go out. I asked if he checked the quanity and he said no as the oil had just been changed. ( I'm going to see him tomorrow and get on him about that) He took the car into the dealer today and they told him the problem was the harmonic balancer. Neither of us is that well versed on the North star but what could the balancer have to do with low oil press. does the oil pump drive off of it or something. My thought was low oil quanity or a bad press transmitter I know some of you know quite a bit about these engines, any comments or ideas? All will be appreciated, thanks.