20w-50
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20w-50

  1. #1
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    Default 20w-50

    you guys running this oil what is your oil pressure at after its warm.


    mine never dropped below 70psi,which makes me wonder if its pushing the oil through it.

    doesn't the oil pump have a pressure relief at 70psi
    Last edited by carveronline; 05-19-2009 at 01:26 AM.

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  3. #2
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    i would feel better if the gauge was reading 65psi

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    Senior Member hotbo's Avatar
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    i run 20-50 and engine temp at 180 degrees at idle in my bbc is 45-50 psi at wot around 70 ,melling highvolume,lowpressure pump.travis

    p.s has been this way since last re-ring 3 years ago.must be a good one.lol!!!!

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    Member BadBahner's Avatar
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    Quote Originally Posted by carveronline View Post
    i would feel better if the gauge was reading 65psi
    I run 20-50 and my engine water temp is 110 and oil press is 40-50
    BadBahner
    1981 Bahner 19 Bubbledeck 454 12jg
    2009 HTM SR-24

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    yea my temp is only 130-140 but never drops below 70psi should i run something different

  8. #6
    I'm No Expert Shaun's Avatar
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    The gauge never drops below 70? Maybe something's wrong with the gauge... try priming the pump and see what the
    gauge reads, you should be able to drop the pressure by slowing the drill down. You could actually probably just kill the ignition and turn the motor over for a while too.

  9. #7
    E-7 Sheepdog (ret) SmokinLowriderSS's Avatar
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    Quote Originally Posted by carveronline View Post
    you guys running this oil what is your oil pressure at after its warm.


    mine never dropped below 70psi,which makes me wonder if its pushing the oil through it.

    doesn't the oil pump have a pressure relief at 70psi
    Used to run 20-50 Castrol Synthetic, hard to find lately so running 10-50 same.

    Stock GM/Melling oil pump, 23psi hot @ idle after a 4 or 5 mile WOT rip, engine cooling water running about 130*, 58PSI @ full throttle (5,400 rpm).
    "As democracy is perfected, the office of president represents, more and more closely, the inner soul of the people. On some great and glorious day the plain folks of the land will reach their heart's desire at last and the White House will be adorned by a downright moron."
    H.L. Mencken

    OBAMA: Some people deserve this.
    The rest of us are being dragged along kicking and screaming.

  10. #8
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    turning the engine over with the coil disconnected i got 55-60psi (cold)

    and the gauge build pressure turning it over with the key
    Last edited by carveronline; 05-21-2009 at 10:35 AM.

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