Oil pressure

I changed my oil about 2k miles ago. Not sure what was in it before but I put in royal purple 10w30. For the first 1k or so on warmup the pressure would almost tag 80 but would drop to between 50-65 (3/4 mark and just lower) and then hold steady. I noticed today that warmup was just under 40. Once warm, at idle this is where she sits *first picture*
Doing 50 in 4th is the second picture and it pretty much hangs around there in all gears. Only exception is 2nd around 3k rpm. Any ideas what’s going on? Still have proper amount of oil, no leaks and not burning any.


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Try a new sending unit .


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Also check the connections at the sending unit and the gauge

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Thanks guys


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Yeah I had a bad sending unit in my 89' Plymouth Acclaim (first car from grandma..haha). Cruising to Sacramento and come to a stop and the oil pressure drops out. Freaked out. Turns out it was a 30 part.

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