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  1. #1
    Join Date
    Dec 2013
    Location
    Bay City, MI
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    Question Engine Oil Pressure at Speed?

    What should my engine oil pressure be reading when at speed (above 20 MPH)? My guage is pegged at 80. It drops to about 50 when at idle. Should I be concerned? I'm used to seeing guages read in the middle when normal, so this jumped out at me.
    2008 Mobius LSV
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    2 Wetsounds Pro 80's, 2 Wetsounds MB8's

  2. #2
    Join Date
    Jan 2008
    Location
    Tallahassee, FL
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    11,297

    Default

    I think mine reads about 60 most of the time.
    My Mom said I'm not allowed to get wet!
    2008 LSV
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  3. #3
    Join Date
    Jan 2011
    Location
    Western PA
    Posts
    51

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    Ours is 40-60 with straight 40 weight oil.
    2004 Supra 22 Launch SSV
    325 Indmar Assault 320 HP
    "One more hour"

  4. #4
    Join Date
    May 2009
    Location
    Carlton Oregon
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    Oil pressure is related to weight of oil, temperature, RPM. Of your constantly running 80 I would look at the oil weight, then pressure sending unit.

    While 80 is not bad, it's not ideal.

    Plus if your sending unit is bad you really have no idea what pressure you have and of you run low you won't know it.
    Malo <--- Means--Evil or Mean One. This explains a lot.
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  5. #5

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    mine does the same thing with 7.5 hrs i just thought is was normal should i get the dealer to look into it at my ten hour service
    2013 outbackv

  6. #6
    Join Date
    May 2009
    Location
    Carlton Oregon
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    Quote Originally Posted by Birdman View Post
    mine does the same thing with 7.5 hrs i just thought is was normal should i get the dealer to look into it at my ten hour service
    Of it was my boat, I would ask them to verify it with a shop pressure gauge. Of it really is 80 then you need a higher pressure gauge..

    At no point do you want a Pegged gauge on your boat unless it's the fuel gauge.
    Malo <--- Means--Evil or Mean One. This explains a lot.
    2013 Mojo 2.5 Skylon Tower. Bestia < Beast >
    Exile ZLD
    6 SX65M Cabins
    6 XM9 Towers
    1 XI Big 15 Woofer in a custom Fiberglass box
    1 XI 1K Harpoon
    2 XI 800.4
    1 XI 2500.1
    2 Interstate 2400U 6V Golf Cart Batterties
    Custom 1 Off Evolution Cover

  7. #7
    Join Date
    Jan 2008
    Location
    Pensacola, FL
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    1,544

    Default

    To be sure, you would need to use a mechanical gauge. I would venture to say that you oil pressure isn't truly at 80, the accuracy of the gauges could be questionable. I would only start to get concern if there comes a time when your pressure doesn't stay where is "normally" does in your boat.
    1997 MasterCraft 205

    2008 Moomba Outback
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    1992 MasterCraft 205
    1999 Malibu Response LX
    1987 Marlin Magnum Skier

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