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Thread: ATTENTION: Know Your Jeep JK Wrangler Coolants and Save Your Engine!

  1. #271
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    New (to me) ‘13 JK, needs coolant

    I did some pretty extensive reading on this thread, and in other places around the internet. As with most information gathering, the more you learn about a subject, the less sure you become. My question is this:

    I bought my JK not too long ago and the coolant is low. When I look down into the overflow reservoir it looks orange just like the OP said.

    HOWEVER, the CarFax report said that the radiator had been replaced (by a Chevy dealership), so I suspect they may have used regular orange coolant. Furthermore, the OP statement below leads me to think that non-Mopar, OAT coolant will be Orange:

    “A little background on the color so that the next part makes sense to you guys....As we know, FIAT is with Chrysler now. Fiat has been using orange colored OAT for years. When Chrysler switched to OAT, they didn't want dealers/people getting confused, so to differentiate the new OAT coolant with the chrysler original orange HOAT, they added a purple dye. As a result, due to a weird light refraction, the purple OAT looks weird (even orange) when looked at certain angles. You can even pop open your radiator cap on your 14 and the coolant looks so orange you'd bet me your jeep that it's orange....but it isn't.”


    Moving on, if I buy Peak Antifreeze, that’s rated for Chrysler 2013+, says it’s OAT, but is orange in color, would that be wrong? (https://peakauto.com/products/antifr...d-life-orange/)

    And lastly, since it is not the factory radiator/coolant, is there an easier way to check or even “dip” the reservoir?
    Last edited by Waxmell7; 10-19-2019 at 05:39 PM. Reason: Clarification

  2. #272
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    Quote Originally Posted by Waxmell7 View Post
    And lastly, since it is not the factory radiator/coolant, is there an easier way to check or even “dip” the reservoir?
    Well I figured this part out. But anyone have input on whether it’s OAT or HOAT? Base on my readings I’m assuming OAT.
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  3. #273
    Knows a Thing or Two Spazbyt's Avatar
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    Honestly I just went through this yesterday. I wasn't going to just hope that my purplish orange stuff was OAT so I just flushed the hole system. Now I know exactly what I have. A few months ago I had top it off with green "universal" after doing all the research. Then I found some sludge in the bottom of my overflow so I freaked my self out and flushed it all. Problem solved.
    Quote Originally Posted by Waxmell7 View Post
    Well I figured this part out. But anyone have input on whether it’s OAT or HOAT? Base on my readings I’m assuming OAT.
    Sent from my SM-G960U using WAYALIFE mobile app
    I've never done it but I'm sure i'll be good at it

  4. #274
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    Confusion over Part Number

    You state the part number is: 68163849AA

    However, the Chyrsler TSB you reference states the part number as: MOPAR P/N 68163848AA

    Now I'm more confused than before.

  5. #275
    Nothing but a Thing MericaMade's Avatar
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    Quote Originally Posted by JKURAZ View Post
    You state the part number is: 68163849AA

    However, the Chyrsler TSB you reference states the part number as: MOPAR P/N 68163848AA

    Now I'm more confused than before.
    I think 48 is concentrate and 49 is the 50/50 mix.

  6. #276
    Nothing but a Thing Overland_stormtrooper's Avatar
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    Correct
    Quote Originally Posted by MericaMade View Post
    I think 48 is concentrate and 49 is the 50/50 mix.
    Sent from my SM-G960U using WAYALIFE mobile app

  7. #277
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    Springfield, MO
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    So glad I found this thread! After owning TJs, I recently purchased my first JK, a 2013 Wrangler Sport with 75k miles. Just last night I changed all the fluids, because I have no idea if the two previous owners followed any of the recommended service intervals, and I just wanted a fresh starting point going forward. So I changed brake, power steering, oil, manual transmission, transfer case, and diff fluids.

    The ONLY thing I didn't change was the coolant, because I honestly just didn't feel like messing with flushing it. I'm so glad I didn't! I can tell you right now 100% I would've grabbed a bottle of the orange stuff at O'Reilly and screwed up my coolant system.

    I just this morning decided to research the flushing process and stumbled on these HOAT vs OAT threads. Now I know to make sure which I have first (should be OAT, since I have a 2013), and I also know my fluid is still theoretically good for another 75k miles, so I just need to test it occasionally.

    Thank you so much to the OP for this detailed information!!

  8. #278
    Fresh Catch DarkSpeed's Avatar
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    Quote Originally Posted by NFRs2000NYC View Post

    I hope this post helps some members along the way!

    Dave
    Awesome work. Thank you!

  9. #279
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    I have a 2013 jku Sahara the build date is November 2012. Would it be using hoat or oat?

  10. #280
    Old Timer sipafz's Avatar
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    ATTENTION: Know Your Jeep JK Wrangler Coolants and Save Your Engine!

    Quote Originally Posted by nsmac84 View Post
    I have a 2013 jku Sahara the build date is November 2012. Would it be using hoat or oat?

    Look in your owners manual.

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