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  1. #1

    Default Ford 5.8l engine oil

    Hi I recently purchased a 94 four winns with the 5.8l I can't really find anywhere telling me engine oil type. I dunno if previous guy used synthetic or conventional engine has 430hrs any help would be appreciated

  2. #2
    Join Date
    Dec 2015
    Location
    maplevalley WA
    Posts
    3,470

    Default Re: Ford 5.8l engine oil

    All OMC engines call for SAE 30 above 32 degrees and 20W-20 below 32 degrees just use a high quality oil unless it has penzoil on the label IMHO
    It takes a nickle to go first class!
    If it aint broke dont fix it!!

  3. #3
    Join Date
    Apr 2009
    Location
    Long Island, NY,
    Posts
    45

    Default Re: Ford 5.8l engine oil

    You can use straight 30 or the Merc/Quicksilver 25/40. I use the Merc oils and filters on my OMC 4.3 and an oil analysis showed that it protects very well.

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