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I have a 2013 Silverado Z71 with low oil pressure at idle


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My 2013 Silverado has good oil pressure until it get to 210 temp around 50 to 60 psi then drops to 20 psi at idle I changed the oil pick up tube and o ring sending unit and screen put 10w30 oil in it removed valve covers to check for stuck lifters have not changed the oil pump yet I just would like to have some advice before I do the lifters do have a rattling sound reason I checked for stuck lifters and I have no check engine light on and low oil pressure light has never come on

Edited by Boduke88
left out some of topic
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The 20psi at idle is well within the oil pressure spec of the engine.

 

Those engine can idle between 15-25psi, have a cruising oil pressure of 35-40 and have a heavy/full throttle oil pressure of 50-60psi.

 

Some oil filters can cause a lower idle oil pressure than others but the pressure you are seeing is not a problem currently.

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Thank you for your replie OTHERS have told me that to I didnt mention it in the topic but its also lossing power 

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