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Thread: Engine Oil

  1. #1
    Join Date
    Jan 2003
    Location
    Nashville
    Posts
    57

    Default Engine Oil

    Question: I know Indmar says use the Pennzoil 15W-40 Marine Oil. Someone else told me it was just as good to use regular Pennzoil 10W-40. Any thoughts?

  2. #2
    Join Date
    Aug 2002
    Location
    Bismarck, NorthDakota
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    577

    Default Replying to Topic 'Engine Oil'

    Yeah, void warrenty!

    I use Amsoil marine grade, I don't care for the penzoil
    Bruce Fuerstenberg

    Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways, totally worn out, shouting...holy shit!...what a ride!

  3. #3
    Join Date
    Apr 2003
    Location
    Powhatan, VA
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    316

    Default Replying to Topic 'Engine Oil'

    Been using Penzoil 15W 40 "Longlife" from WalMart. Somewhere on the board we determined last year that the Marine grade wasn't necessary.

    Why would you prefer 10W? Availability?

  4. #4
    Guest

    Default Replying to Topic 'Engine Oil'

    Marty,last year I e-mailed Indmar,and told them I could not get Penzoil marine oil locally.They told me it was fine to use the 15w40 heavy duty oil.I printed the reply and am saving it.

  5. #5
    Guest

    Default Replying to Topic 'Engine Oil'

    test

  6. #6
    Join Date
    May 2003
    Location
    south east michigan
    Posts
    243

    Default Replying to Topic 'Engine Oil'

    Last year I e-mailed Indmar and told them I could not get the penzoil marine oil locally.They told me it was ok to use 15w40 penzoil heavy duty oil.
    jy

  7. #7
    Join Date
    May 2003
    Location
    south east michigan
    Posts
    243

    Default Replying to Topic 'Engine Oil'

    This year I'm going to Amsoil 15w40 synthetic marine oil.
    jy

  8. #8
    Join Date
    Jul 2003
    Location
    Carson City, NV
    Posts
    157

    Default Replying to Topic 'Engine Oil'

    15W-40 oil will have the viscosity of 15W oil when the engine is cold and that of 40 oil when the engine is warm. The "W" indicates that the oil is desirable for use in winter driving conditions. The Indmar manual recommends using 10W-30 Penzoil Marine if the engine will be used below 20 degrees. I have not been able to determine if "Marine" oil has some additive that regular oil does not. However, most oils have rust and corrosion inhibitors already in them and this should be a closed system.

    Anybody out there been running the readily available 10W-30 or 40 for a long time in their engines? Any problems?

  9. #9
    Join Date
    Jan 2003
    Location
    Minnesota and Wisconsin
    Posts
    1,145

    Default Replying to Topic 'Engine Oil'

    Most of the 15W-40 I have found around here appears to be designated for use in Diesel engines. The guy at the NAPA store recommended against it in a gas engine.

    I have a source for 15W-40 Marine Penz so no problems.
    If you believe something to be true, it will be - in it's consequences.
    http://bensonwdby.home.comcast.net/

    2009 MasterCraft ProStar 197 - DD - 5.7L - 325HP - Zero Off

  10. #10
    Join Date
    Jan 2003
    Location
    Nashville
    Posts
    57

    Default Replying to Topic 'Engine Oil'

    Found the Penzoil Marine at Wal-Mart so I stayed with that. Hard to believe I called all over town looking for it and ended up finding it at the local Wal-Mart.

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