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Thread: Recommended Oil

  1. #21
    Join Date
    Nov 2013
    Posts
    145

    Default

    I had this same issue a couple weeks ago at the Lake of the Ozarks. It was the first time I needed to add oil and I figured I'd just beebop on over to the marina and pick up some Penzoil 15w40. No dice. No one carries it. So then I went to just any 15w40 but back pedaled when I realized most 15w40's are diesel oil. I run Mobil Delvac in my Duramax. I started reading as much as I could find before I dumped it in the LSV. There are equal parts information on NOT running diesel oil as there are FOR running it. What I found was for that much disinformation, I wasn't going to chance screwing up my motor. I called 4 separate marinas and spoke with their techs. All of them, told me not to run any type of diesel oil as it had detergents that could harm my motor (5.7 GM block/Indmar). They all independently told me to switch to any marine or racing oil with a 25w40 rating, stating that all Merc stuff had switched to it.


    That's my .02Ę but there are a ton of forum members here, and on other sites that have been running Rotella for a long time with no issues.
    2007 LSV

  2. #22
    Join Date
    Jun 2012
    Location
    Portland Oregon
    Posts
    789

    Default Recommended Oil

    Quote Originally Posted by kaneboats View Post
    I'm not sure the analysis for diesel engines in the articles would be the same for a gasoline marine engine.
    That's why I look at the lab analysis if the oil out of the bottle and pick what's best for me. In the end I doubt it will matter. I apologize that my screen shots are blurry when posted via taptalk. I hope the links at least provide pictures without being blurry. Again contributing to an oil thread is always a double edged sword. I don't expect to sway anyone to any particular brand.
    -Jake

  3. #23
    Join Date
    Jun 2008
    Location
    Trussville, AL
    Posts
    76

    Default Recommended Oil

    Jeffcook3 called SC and Indmar. Indmar said both oils ( valvoline 20w50 premium and rotella t diesel 15w40 ) will void warranty.

    Ordered pennzoil from amazon today.

    I think dealerships should be required to stock recommended oil.






    Sent from my iPhone using Tapatalk
    2012 Moomba LSV

  4. #24
    Join Date
    Sep 2005
    Location
    Claytor Lake, VA
    Posts
    292

    Default

    From the owners manual.

    Indmar recommends 15W-40 Pennzoil Marine in their engines. If not available, use a 15W40 motor oil with an A.P.I. classification rating of SL/SJ/CI4/CH4/CG4 or equivalent. Synthetic oils are not recommended until after the engine has been run for 100 hours.

    No matter which brand oil you use, as long as it meets the class ratings you are fine.
    2005 Mobius LSV

  5. #25
    Join Date
    Jul 2013
    Location
    Cedar Falls, IA
    Posts
    356

    Default Recommended Oil

    I was surprised to find out my dealer wasn't using the recommended fluids either. 20hr service and 1 year service was part of my purchase so I didn't think much of it.

    My dealer ended up using Merc full synthetic 20w40. I was a bit concerned about the incorrect weight but this oil is far superior to the Pen dyno oil IMO.

    Doesn't matter at this point, what's done is done and I'm sure the oil won't be the cause of any issues I have.


    Sent from my iPhone using Tapatalk
    2013 Moomba Mojo 2.5
    Exile SXT9's, Xi12D, Javelin, 800.4, ZLD MKII

    2012 F150 Ecoboost

  6. #26
    Join Date
    Jan 2008
    Location
    Tallahassee, FL
    Posts
    11,109

    Default

    Quote Originally Posted by uniwarking View Post
    I'm sure the oil won't be the cause of any issues I have.
    You got that right. Maxpower made this point last time the oil issue came up on here. When was the last time anybody heard of engine failure on one of these from an incorrect oil? About never. The modern oils are pretty darn good and changing it on schedule is probably the most important thing you can do for longevity.
    My Mom said I'm not allowed to get wet!
    2008 LSV
    2000 Outback LS (sold)
    Exile Tunes
    PWI
    LLTR!!!!!!!!



  7. #27
    Join Date
    May 2014
    Location
    Clermont, Fl
    Posts
    244

    Default

    Dealer I bought my boat from was located next to a NAPA Auto Parts, and always used NAPA brand oil in every boat he serviced.

    I still use it.
    Ed Geary
    2009 Moomba Outback V
    Clermont, Fl

  8. #28
    Join Date
    Dec 2006
    Location
    Tuscaloosa, Alabama
    Posts
    733

    Default

    Amazon.com has the Pennzoil 15w40 marine oil. Dont even have to go to the store
    Jack Beams
    '05 Outback DD
    325HP EFI Indmar

  9. #29
    Join Date
    Mar 2003
    Location
    s.e. washington state
    Posts
    2,065

    Default APIís Engine Oil Licensing and Certification System (EOLCS)

    The API certification on the bottle is all you need. The oils that meet the requirements including SC would be covered under warrenty with no exceptions. It would be a long day in court if the warrenty was voided for using an API certified oil that wasn't a "recommended" oil by SC. I think you would get support by the oil manufactorer if they found out someone was accusing them of manufactoring inferior oil that meets certification. It will never happen.
    1998 Mobius
    310 HP PCM

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