hi , i need some info guys...

my vec c z18xe has a few oil leaks, i took it to a garage who said it was the oil pressure switch and the sump sensor o ring, i went and bought the stuff to do it myself and noticed it wasnt the pressure switch but the crank sensor (i think) bottom of the block r.h.s as your looking at the engine...i need to know if this would leak oil if the seal had went ...im asking as the oil filter above it is leaking and im not sure if its running down onto it... ill try and upload a pic...