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#1 Oil pressure
Posted: Thu Jun 28, 2018 10:23 am
by peters3103
Hi Gents,
My 3.8 is running approximately 40-45psi oil pressure at 2500 RPM at operating temperature. This drops to approximately 20-25psi at idle. Is this healthy?
Cheers,
Pete
#2 Re: Oil pressure
Posted: Thu Jun 28, 2018 11:58 am
by cactusman
Sounds just fine
#3 Re: Oil pressure
Posted: Thu Jun 28, 2018 12:08 pm
by MarkRado
Nothing wrong in my opinion; you might want to check oil pressure with a direct acting gauge with a suitable scale. Watch out for a deep knocking noise from the main bearings at idle - this means too low a pressure.
Pressure on my 3.8 (60k miles) drops to somewhere to around or under 20 psi hot, but no knocking noise; I use 20W 50 oil.
#4 Re: Oil pressure
Posted: Thu Jun 28, 2018 12:21 pm
by peters3103
Definitely no knocks but I do have a lower timing chain rattle (I think). If that oil pressure is ok and oil consumption isn’t high (about a litre in 1000 miles at highway speeds) then I’ll just fix the rattle issue and make the sump/rear main oil tight as I don’t think a full rebuild is warranted.
(rebuilt 20000 mls ago)