DD15 oil!

Discussion in 'Ask An Owner Operator' started by KB1TRY, Jun 20, 2023.

  1. Jun 20, 2023 #1
    KB1TRY

    KB1TRY Bobtail Member

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    Hi all! I am the new owner of a 19’ Cascadia with a Detroit diesel dd15.
    What oil are you guys running?
    Detroit isn’t very clear on on it. 93k223 spec says FA-4 oils but 93k222 shows others.

    What do you guys run?
    15w40 or 10w30?
    TIA
    Quinn
     
    KB1TRY, Jun 20, 2023
    KB1TRY, Jun 20, 2023
    #1
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  3. Jun 20, 2023 #2
    Blagoje

    Blagoje Medium Load Member

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    You can run 15w40 all year round in that engine just fine, I have been in a -30 blizzard in Wisconsin and the DD15 started just fine with that grade oil.
     
    Blagoje, Jun 20, 2023
    Blagoje, Jun 20, 2023
    #2
    Judge and KB1TRY Thank this.
  4. Jun 21, 2023 #3
    Judge

    Judge Road Train Member

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    x2 use 15/40 in my trucks, never had an issue
     
    Judge, Jun 21, 2023
    Judge, Jun 21, 2023
    #3
  5. Jun 21, 2023 #4
    REALITY098765

    REALITY098765 Road Train Member

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    What is the justification for that? Why do you run 15/40 vs 10/40 for example?
    assuming diesel blend for both.
     
    REALITY098765, Jun 21, 2023
    REALITY098765, Jun 21, 2023
    #4
  7. Jun 21, 2023 #5
    Blagoje

    Blagoje Medium Load Member

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    Jul 14, 2022
    Paris, Illinois
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    The justification for it is that it has worked in my experience, even in extreme circumstances that many might conclude that it would not work in.

    I myself would prefer to use 0w40 or even 0w30 but those tend to be more expensive than many might care to pay for.
     
    Blagoje, Jun 21, 2023
    Blagoje, Jun 21, 2023
    #5
    REALITY098765 Thanks this.
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