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oil pressure

   
Old Dec 1, 2008 | 11:44 AM
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my oil pressurewhen i start my truck is over 40 i would say 50 or so and when my truck is warmed up it goes below 40 like 37 is this normal???
 
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Old Dec 1, 2008 | 11:46 AM
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Mine does the same thing. I'm running Pennzoil 10W-30.
 
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Old Dec 1, 2008 | 12:17 PM
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i have mobile one and soon to be amsoil
 
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Old Dec 1, 2008 | 03:29 PM
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Nothing wrong with that. Oil is thinner when it's hot.
 
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Old Dec 1, 2008 | 03:48 PM
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Default oil
ok thats fine but tell my why when my tuck is harmed up the oil pressure will go back down and as soon as i touch that gas it goes right back up.
 
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Old Dec 1, 2008 | 03:58 PM
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The oil pump is like any hydraulic pump. Pressure and volume will increase with speed.

Edit: Make that pressure and flow rate, unless you have a variable-volume pump.
 
Last edited by Rex-TheDOGG; Dec 1, 2008 at 04:09 PM.
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Old Dec 1, 2008 | 08:37 PM
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that's all normal. mine does the same thing.
 
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Old Dec 2, 2008 | 04:31 PM
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Glad to see I'm not the only person who's truck does this too I got a 98' 3500 5.9 when its cold 60psi and when it gets to normal operating temp 35psi but if you get the rpm's high enough it will go up to 40psi
 
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