oil pressure

Hi all. So we found that a lot of the leaking oil in my Malibu is coming from the oil pressure sensor next to the distributor. I am stock using the idiot light only. The gauge seems simple enough, unscrew from the block add a bit of teflon tape to the replacement, then attach the rubber cap back...

My 632 CID pump gas engine has a Melling standard pressure/high volume oil pump. Even when the engine reaches full operating temperature, the oil pressure is at about 32 PSI during idle, and climbs to 79-80 PSI by 2,500 RPM and stays there until the throttle is let off. This is with 10/40W oil...