Thank you guys. I’m wondering if I should test the oil pressure with the oil that’s currently in it or if I should drain and change the oil with 15W-40 oil as recommended here. Testing the oil pressure will require buying a test gauge, which I don’t have - any recommendations for one with an appropriate adapter? Which plug or line will I remove to connect the test gauge?
When draining the oil, is it best to have the vehicle perfectly level or maybe slightly uphill since I noticed the drain plug is in the back of the pan? My driveway is very... not level. I’ve got some flattish areas although the truck might be leaning toward the passenger side. Or I could park it in an uphill part of the driveway. I could also go to a more flat area, but if I’m pulling off parts to clean the pickup pipe and sump screen, as well as replacing o rings, I’ve got to pick my place carefully.
Should I clean grime off the underside of the engine?
Would you use mineral spirits, brake parts cleaner, gasoline or something else to clean the pickup tube, oil pan and underside of motor?
Just bought the pickup pipe o ring and the pan gasket from British Pacific - I’ll start inexpensively by doing the oil drain, cleanup, o ring, gasket, oil change. Then I’ll have to drive the car and see how it is and probably test the pressure if needed. I’m trying to avoid buying a gauge for this since things are tough right now with rebuilding my house.
Thank you all. I’d be lost without you. I just replaced my purge valve and that seems to have resolved another issue. I’m feeling good about getting into this oil light issue now!
I found that the oil pressure switch thread size is M12x1.5 - does anyone have a recommended oil pressure test gauge? Prefsbky this would be one that includes the necessary gauge adapter. Will I need an o ring as well?