wtf is up with my oil pressure (2005 Chevy Trail blazer 4.2L 215000 miles)
This has been a week, at first when ever I turned my oil pressure dropped to 0 then once the turn was done it went back up to 40 when I go into 2.5-3.5+ it goes over 40 to around 60. Now it does it when ever I idle, slow down or even when I’m going a consistent speed ever min or so it’ll drop and go back up. What should I check first? Thank you for your time!