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225 Oil Help

Discussion in 'Early CJ5 and CJ6 Tech' started by Ethan Cerna, Nov 16, 2021.

  1. Ethan Cerna

    Ethan Cerna New Member

    Hi there. I have a rebuilt 225 V6 that I’m getting ready to start for the first time. I was hoping to get some tips on the break-in process, what oil I should break it in with, and what oil should I run long term in it. Any info will help. Thanks
     
  2. Rich M.

    Rich M. Shoe salesman 2024 Sponsor 2023 Sponsor 2022 Sponsor

    I like Lucas 30wt break in oil. Prime and make sure you have pressure on the gauge and to the top of the rockers before starting.
    After break in run whats appropriate for your climate / temperatures. I use diesel oil ( by default) because it has the additives for our older engines and I have lots around with 3 other diesels on the property. Conventional oils with an additive is appropriate too.
     
    Ol Fogie and Ethan Cerna like this.
  3. truckee4x4

    truckee4x4 Grant Kaye 2023 Sponsor 2022 Sponsor

    When I got mine back from the rebuilder, he sent me with these directions, maybe they will be helpful for you?

    [​IMG]
     
    Ethan Cerna, Dandy and 3b a runnin like this.
  4. Wingnut68

    Wingnut68 New Member 2022 Sponsor

    I just got mine back from the machine shop and was told to use Lucas break-in oil (I think that's what I got) with zinc additive. New oils don't have the zinc that the old motors benefit from. He also said to make sure it was full of coolant, fill it until it comes out of the heater port on the top of the head. And ABSOLUTELY don't let it idle....keep the RPM around 2,000 to make sure the cam spins at a high enough speed. What I didn't ask was how long to keep the RPMs up.
     
  5. colojeepguy

    colojeepguy Colorado Springs

    20 minutes
     
  6. timsresort

    timsresort Active Member 2023 Sponsor 2022 Sponsor

  7. dnb71R2

    dnb71R2 SuperDave 2023 Sponsor

  8. Tom_Hartz

    Tom_Hartz Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    After the break in I always run Valvoline VR1 racing oil. It has added zinc.
     
  9. Wingnut68

    Wingnut68 New Member 2022 Sponsor

    Thanks for the info Colojeepguy! So... it sounds like I should be using oil with Zinc like VR1 for older motors...correct?
     
    Tom_Hartz likes this.