5.3 suburban low oil pressure
October 14th, 2022, 12:00 PM
#11
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Changes sensor still low oil pressure on gauge
changed sensor and filter still oil pressure is at 20 at idle and won’t ever get to 40 even at 3000rpms. Also the first time you start it up in the morning the oil pressure is at 10 slowly goes up to 20 if driven
October 14th, 2022, 3:22 PM
#12
Are you running 5-30w in it? I'd try 10-30w next change. My '11 goes to 40 cold, 25 at hot idle with 5-30w synth. oil with 147k miles on it. Same since I got it with 35k miles on it.
Only true test is to test with a mechanical gauge. I've read that the O ring seal on the oil pickup tube can lose some sealing and drop pressure. I would do the mechanical gauge test before jumping to that conclusion.
Only true test is to test with a mechanical gauge. I've read that the O ring seal on the oil pickup tube can lose some sealing and drop pressure. I would do the mechanical gauge test before jumping to that conclusion.
Last edited by repairman54; October 14th, 2022 at 3:29 PM.
October 14th, 2022, 3:24 PM
#13
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5-w30
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