I have a 1996 impala which has a supercharger 4.5psi. My car has been leaking very small amount of oil from the oil pan gasket for a long time and so i got tired of it. I took it to the shop 2 weeks ago and they said it was the oil pan gasket so i told them to replace it and so they did. After i got it back i drove it on the freeway and came back home and looked underneath and it was leaking again.Took it back and it was the oil pan gasket again so they replace it and i took it home and it leaked again. Then i took it back again and it was the same thing so the shop did some diagnosing and told me that their was too much pressuer in the oil pan and i need a breather. I have never heard that so thats why i am asking can it be the pressure or is it something else.