<![CDATA[M42 oil pressure switch choices?]]>Any recommendations on an oil pressure switch for an M42 (1991 318is)? Choices at FCP Euro range from BMW at around $19 to FAE and Rein for around $5.  BMW tends to be the rule for a CPS. Not sure what the verdict is on an oil pressure switch.

I noticed some oil pooling on the block in the nook under the oil pressure switch. I already replaced the oil filter housing gasket and o-ring a few years ago so suspect a leak at the pressure switch. Though it's also a little wet on the block under the forward intake runner and on the wire running down to the switch. Could be just oil blowing around or something more.

]]>https://wibimmers.com/topic/5186/m42-oil-pressure-switch-choicesRSS for NodeWed, 16 Sep 2026 05:44:46 GMTSat, 17 Feb 2018 20:20:02 GMT60<![CDATA[Reply to M42 oil pressure switch choices? on Mon, 19 Feb 2018 04:03:43 GMT]]>Anything should be fine besides Chinese junk.  As long as you pay attention that it lights up with key on engine off and it goes out when the engine starts it should be fine.  A friend recently trashed the engine in his Ford Focus because the light or sensor didn't work and he ran out of oil.  It got loud and started losing power but there weren't any warning lights so he drove to the next highway exit and that was too late.

]]>https://wibimmers.com/post/88396https://wibimmers.com/post/88396Mon, 19 Feb 2018 04:03:43 GMT<![CDATA[Reply to M42 oil pressure switch choices? on Sat, 17 Feb 2018 22:57:54 GMT]]>I usually reach for FAE but I have never heard any bad reviews of any oil pressure switch brands.

]]>https://wibimmers.com/post/88385https://wibimmers.com/post/88385Sat, 17 Feb 2018 22:57:54 GMT