seniorjumper82 Posted March 2, 2020 Share Posted March 2, 2020 My oil pressure is reading 40-45. Is this normal? Pardon my ignorance for not knowing. Quote Link to comment Share on other sites More sharing options...
NWI Denali Posted March 3, 2020 Share Posted March 3, 2020 Yes that is normal. May dip down to as low as 15-20psi on a hot summer day at idle, and should shoot up to 60-70psi at WOT. Quote Link to comment Share on other sites More sharing options...
truck_newbie Posted March 3, 2020 Share Posted March 3, 2020 Mine stays at 30psi on idle after the engine is fully warmed up. Cold start is closer to 60psi. Quote Link to comment Share on other sites More sharing options...
huntwyo Posted March 3, 2020 Share Posted March 3, 2020 My oil pressure is reading 40-45. Is this normal? Pardon my ignorance for not knowing. [emoji85]About where mine usually isSent from my GM1917 using Tapatalk Quote Link to comment Share on other sites More sharing options...
smrr1 Posted March 3, 2020 Share Posted March 3, 2020 The pump is different than old vehicles. Basically “low” pressure when little to no demand and “high” pressure when needed. Freaked me out the first time i saw it too. Normal. Quote Link to comment Share on other sites More sharing options...
TXGREEK Posted March 3, 2020 Share Posted March 3, 2020 NO, that’s not normal. I was worried too, used to be low while using Wix then went back with Amsoil filter which shot up between 35 at idle and 43 at full throttle, got this from my GMC Service Manager Sent from Above 1 Quote Link to comment Share on other sites More sharing options...
Bob2C Posted March 3, 2020 Share Posted March 3, 2020 Here’s mine on the 5.3 at idleSent from my iPhone using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
TXGREEK Posted March 3, 2020 Share Posted March 3, 2020 Here’s mine on the 5.3 at idleSent from my iPhone using TapatalkIdentical to mine [emoji1303]What oil filter are you running?Sent from Above Quote Link to comment Share on other sites More sharing options...
Bob2C Posted March 3, 2020 Share Posted March 3, 2020 Identical to mine [emoji1303]What oil filter are you running?Sent from AboveAc Delco Pf63ESent from my iPhone using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
CamGTP Posted March 3, 2020 Share Posted March 3, 2020 That blurb from GM is just the minimum spec that is wanted, so anything at that or over would be considered normal. I see 35-40psi at speed, 30-35 at idle and 60+ at full throttle. 1 Quote Link to comment Share on other sites More sharing options...
TXGREEK Posted March 3, 2020 Share Posted March 3, 2020 You’re going to have all types of responses, Amsoil filter is running at same exact pressures as OEM filters but Wix XP was half that of OEM and Amsoil. Most would say they use OEM filters for the sakes of warranty but not all filters are alike and some would even alarm themselves having such of a difference.What I do know is that I’ve noticed a difference going from 20 at idling to 38 at idling and if OEM is at same as my Amsoil, it’s a no brainer for me. Sent from Above Quote Link to comment Share on other sites More sharing options...
newdude Posted March 3, 2020 Share Posted March 3, 2020 23 hours ago, seniorjumper82 said: My oil pressure is reading 40-45. Is this normal? Pardon my ignorance for not knowing. Normal. Hot idle you may see 25-30psi on the gauge, above 3500rpm you may see the gauge spike up to 60psi+up. Same with under WOT. The oil pumps on these engines are variable displacement and can change based on engine load/oil demand when driving. Quote Link to comment Share on other sites More sharing options...
TXGREEK Posted March 4, 2020 Share Posted March 4, 2020 My 6.2 with Amsoil filter, Cold idle showing 40 higher rpms, hot idle at approx 35. Sent from Above Quote Link to comment Share on other sites More sharing options...
seniorjumper82 Posted March 4, 2020 Author Share Posted March 4, 2020 Thank you everybody for the replies. I can rest easy now! Quote Link to comment Share on other sites More sharing options...
bshort Posted March 4, 2020 Share Posted March 4, 2020 11 hours ago, TXGREEK said: My 6.2 with Amsoil filter, Cold idle showing 40 higher rpms, hot idle at approx 35. Sent from Above Do you sell Amsoil by chance? 1 Quote Link to comment Share on other sites More sharing options...
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