Engine oil 364

Discussion in ''Da Nailhead' started by Chriskack, Jun 27, 2020.

  1. Chriskack

    Chriskack Member

    I'm about to change oil in the engine of my nailhead 364 on my Buick -57.
    Thinking about Valvoline racing VR1 20w-50?
    Do you recomend that?
    Thanks, Christine.
    bhambulldog likes this.
  2. JayZee88

    JayZee88 Well-Known Member

    Pennzoil Pure Plus. Only oil that's 100% man made and has no impurities and flow rates are incredible. Various shootout competitions constantly show this oil at the top. Can be had at Wal-Mart for $25/5 quarts. On my rebuilt 364 I use 10w-30 like stock and add a container of Zddplus to maintain proper zinc levels.
    Last edited: Jun 28, 2020
    bhambulldog likes this.
  3. wkillgs

    wkillgs Gold Level Contributor

    A heavy weight oil such as 20w-50 is not necessary unless you are in a hot climate, or you have low oil pressure due to worn bearings.
    Valvoline also offers a 10w-30 and 10w-40 in their VR1 blend, these would likely be a better choice for you.
    An oil optimized for old cars such as Joe Gibbs brand is another excellent choice.

    But any quality oil is likely to be fine in a 364 since they have a lightweight valvetrain, low spring pressures, and are not revved to 6000+ rpm. An oil or additive wich contains ZDDP will help protect the cam and lifters.
    bhambulldog likes this.

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