ok i started leaking oil after installing a k&n breather filter...its a "clamp" on breather but i figured out there was so way it would clamp on to the stock pipe so i cut the pipe down and widened it alittle to make the "clamp" on breather into a "push in" breather...could this is causing my oil leak? i thought i had it fixed but its still there just not as bad....the hole for the breather is pretty small so could it be to restrictive? now i leave a golf ball sized puddle of oil after the car has been turned off...it was softball ize before i replaced the drivers side valve cover gasket which i though fixed it...should i go ahead and do the other side?