Coolant scare
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Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, Coolant scare in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; Two days after getting my oil changed at a dealer I drove 300 miles to go home. About 150 miles ...
  1. #1
    EasternPA is offline Cadillac Owners Fanatic
    Automobile(s): '04 CTS
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    Coolant scare

    Two days after getting my oil changed at a dealer I drove 300 miles to go home. About 150 miles in and stuck in traffic, I started smelling coolant bad. After a few minutes of getting worse I passed a disabled car with no signs of body damage. I thought Phew! glad it wasn't me. Was surprised by a low coolant warning this morning and attached a picture of the reservoir way below the cool line.

    Which coolant should I use to refill? Dexcool? Or should I flush the whole system and switch back to green? The temp never goes above halfway and I don't see any white smoke or smell any coolant anymore. I obviously can't leave it that low.

    Thoughts? Thank you!

    ----------

    The mobile app keeps crashing when attaching but you can just envision an overflow tank less than half full with orange coolant in it.

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  3. #2
    CadillacAsAlways's Avatar
    CadillacAsAlways is offline Cadillac Owners Enthusiast
    Automobile(s): 2003 CTS 3.2L, Luxury Sport, Diamond White
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    Don't ever let your car go low on coolant. Ever.


    Yes, use GM's Dexcool coolant for aluminum engines as it says in the manual. If I recall its like an orange color...
    Either buy the 100% coolant and make a 50/50 mixture with distilled water, or buy the pre-mixed coolant.

    And don't wait. If your cars super low on coolant, don't procrastinate, even if everything seems fine. Fill it back up before you drive another mile...and check for a coolant leak. You shouldn't just randomly run out of coolant.

  4. #3
    EasternPA is offline Cadillac Owners Fanatic
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    Re: Coolant scare

    Thanks very much for the quick reply. Taking my wife's car to Pep Boys to pick up the 50/50 mix right now. I still don't know what could have happened to trigger blowing some off for a few minutes and then being fine for the rest of the trip.

    Thanks again I really appreciate it.

  5. #4
    CadillacAsAlways's Avatar
    CadillacAsAlways is offline Cadillac Owners Enthusiast
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    Quote Originally Posted by EasternPA
    Thanks very much for the quick reply. Taking my wife's car to Pep Boys to pick up the 50/50 mix right now. I still don't know what could have happened to trigger blowing some off for a few minutes and then being fine for the rest of the trip.

    Thanks again I really appreciate it.
    No problem! And hmm...I have no idea why that would happen. If there's no leak at all but it just randomly lost a lot, then there's not much explanation. Maybe the guys who did the oil change drained the coolant and refilled it improperly? I don't know, just keep an eye on it.

  6. #5
    EasternPA is offline Cadillac Owners Fanatic
    Automobile(s): '04 CTS
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    Re: Coolant scare

    I will. After refilling, I ran it for a little bit and moved the car to look for drips or leaks. Nothing. With my work and personal lives the way they are, I need to be able to get into my weekday car or my weekend car and drive up to 3,000 miles with zero notice, so blowing coolant about 150-170 miles after a dealer oil change was a little disconcerting.

  7. #6
    Cadillac Cust Svc's Avatar
    Cadillac Cust Svc is offline Cadillac Customer Service
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    Re: Coolant scare

    EasternPA,
    We're sorry to hear about the coolant situation. Keep us posted on how those levels look over the weekend!
    Sarah (Assisting Katie), Cadillac Customer Service

  8. #7
    EasternPA is offline Cadillac Owners Fanatic
    Automobile(s): '04 CTS
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    Re: Coolant scare

    Thank you, Sarah. It is very nice to see you participating in these forums! I haven't been around here in a while and your frequent participation is a nice new surprise!

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