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  1. #1
    Viewer Discretion is Advised! UrbanWolf's Avatar
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    Default Coolant flush time?

    There are some oil-ish brown stuff in my car's coolant tank, I think the previous owner put oil in there by accident or something. So should i do a coolant flush? $150 is a bit much for my current pocket.
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  2. #2
    Beer Meister DFBrews's Avatar
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    It is very simple to do a flush get to operating temp drain the coolant fill with water and a bottle of radiator flush run at op temp for 15 minutes drain again fill back up with water one more time for a rinse and then drain then fill with coolant get to op temp and then let cool top off and your done
    You sir, are a specialist in the art of discovering a welcoming outcome of a particular situation....not a mechanic.

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  3. #3
    High Power Shooter Rabid's Avatar
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    Check your oil for antifreeze you might have a blown head gasket.

  4. #4
    Bang Bang Ridge's Avatar
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    Agree with Rabid, check your oil. If it's clean, then just drain the antifreeze from the system, fill it up with water, run it, drain it again and then fill with proper antifreeze.

  5. #5
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    Quote Originally Posted by UrbanWolf View Post
    There are some oil-ish brown stuff in my car's coolant tank, I think the previous owner put oil in there by accident or something. So should i do a coolant flush? $150 is a bit much for my current pocket.
    What is the make, year and model of the vehicle? GMs with dexcool form a brownish sludge, but a lot of times oil gets in via the lovely intake gaskets they used. Nissan has had a lot of problems as of late with the transmission coolers inside radiators leaking, cross contaminating the coolant, and the trans fluid.
    Getting people more wound up than a liberal who just lost their welfare check

  6. #6
    Stircrazy Jer jerrymrc's Avatar
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    Quote Originally Posted by streetglideok View Post
    What is the make, year and model of the vehicle? GMs with dexcool form a brownish sludge, but a lot of times oil gets in via the lovely intake gaskets they used. Nissan has had a lot of problems as of late with the transmission coolers inside radiators leaking, cross contaminating the coolant, and the trans fluid.
    And Dexcool can turn into chunks of crap in just a few years. In my case 36 months in the heater stopped working. Since it was the dead of winter I just back flushed the core but come spring it was time for a complete cooling system overhaul.

    Do understand if it is a GM product and if you convert back to normal antifreeze that your water pump is not long for this world. Most of the cleaners out there now are just a light duty type of thing. Enough cleaner/time and flushes will work but oh for the days of the old 3M cleaner with the neutralizer.
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  7. #7
    Possesses Antidote for "Cool" Gman's Avatar
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    What's the make & model? I had a 2005 Chevy Equinox that had a service bulletin for the rubber hoses turning the coolant brown. They did a complete flush of the cooling system, but the tank still had a bit of a tinge to it.

    You might want to check to see if there's a service bulletin on your vehicle. You might also want to check the Interwebs to see if other folks are having similar issues.
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  8. #8
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    Most of the brown gunk is seen from dexcool and air, and sometimes the green coolant being mixed all together. For the plugged heater cores, etc, CLR works pretty good, just dilute the stuff first.
    Getting people more wound up than a liberal who just lost their welfare check

  9. #9
    Beer Meister DFBrews's Avatar
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    We have some good stuff at work that is not to expensive... Will take pudding from oil cooler failures to clear in a hour ish. 12 gallons of coolant and 11 gallons of oil mixed is messy to say the least but this ruff is legit
    You sir, are a specialist in the art of discovering a welcoming outcome of a particular situation....not a mechanic.

    My feedback add 11-12 ish before the great servpocaylpse of 2012

  10. #10
    Viewer Discretion is Advised! UrbanWolf's Avatar
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    Quote Originally Posted by Rabid View Post
    Check your oil for antifreeze you might have a blown head gasket.
    Oil seems clean.
    Disclaimer: I can't spell.

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