OP switch This Pictures show the bypass valves in the oil filter adapter/housing which over time or lack of frequently changing your engine oil can make the valves sticky or become clogged. This can not only prevent good filtration of engine oil but may cause the failure or mis-reading of the oil pressure switch. As a practice I always spray this area with WD 40 when changing my oil/filter to keep it clean.
Nitrominis, I've always wondered if the metal oil filter cover on the 1st generation would fit in place of the 2nd generation crapstic unit? The last time I changed the oil, a piece of the hex end broke off. Would you know if they are interchangeable?:confused5: