anyone know of undisclosed Mazda warranty programs for faulty oil pressure switches?
 

Interestingly enough, when the oil pressure switch fails oil will leak out of your engine. The oil light does not light up because - wait for it - the oil pressure switch has failed!

Has anyone encountered this issue, or know of any undisclosed Mazda warranty programs dealing with it?

I am referring specifically to the 2004 Mazda 3 Sport GS with the 2.4L engine. May, or may not, apply to other model years/engines.