Coolant for 2011 WRX
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This is a discussion on Coolant for 2011 WRX within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Hey all, I did a search and couldn't find a thread about recommended coolants. I just got MY FIRST SUBIE! ...

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    Coolant for 2011 WRX

    Hey all,

    I did a search and couldn't find a thread about recommended coolants. I just got MY FIRST SUBIE! a couple days ago. I need to fill up on coolant, so I was wondering if there is a specific brand that is superior to the rest. Also, do I need to drain the coolant that's in there now before I replace it? Or can I just add the new coolant to the old coolant?

    Thanks,
    JK03

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    Pro Manscaper Mikie13's Avatar
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    Head to the Subaru dealer and pick up their coolant, follow their recommendations.
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    Registered User nsibanez's Avatar
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    Subaru coolant only. You don't need to drain it you can always just add it. But why do you need to add coolant. Did you lose some? Is it leaking?
    Also remember that you should add coolant when the engine is cold for proper reading.
    Unless you have enough miles on to where the coolant service should be done

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    No leaks or anything from the vehicle inspection it went through prior to my purchase. I think it's just normal depletion of coolant.

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    Registered User nsibanez's Avatar
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    Still you shouldn't have any loss of coolant. If you bought it used though there's always that chance the last owner lost some or spilled and never bothered refilling. You should be alright though
    What year and how many miles?

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    Registered User nsibanez's Avatar
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    J/k about the year.. lol

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    He simply abides. SD_GR's Avatar
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    Quote Originally Posted by nsibanez View Post
    Still you shouldn't have any loss of coolant.
    There is routinely white residue on the overflow tube at its point nearest the plastic overflow reservoir at the nose of the car. This can only be one thing.
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    Registered User nsibanez's Avatar
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    Quote Originally Posted by SD_GR View Post
    There is routinely white residue on the overflow tube at its point nearest the plastic overflow reservoir at the nose of the car. This can only be one thing.
    White residue? ?

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    He simply abides. SD_GR's Avatar
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    Quote Originally Posted by nsibanez View Post
    White residue?

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    Registered User nsibanez's Avatar
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    Quote Originally Posted by SD_GR View Post
    Man I have no clue..have my seen that before. I'd suspect the cap though since it's right there you know?

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    He simply abides. SD_GR's Avatar
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    My car does not have a cap there at all; it only has one radiator cap, not two. Yet the white residue is present on my car also. It always has been. The overflow container is not sealed, and the coolant has a substantial % water. Since the temperatures are elevated it isn't unreasonable to expect losses -- evaporation via the opening through which the black overflow tube enters the reservoir. This opening is not sealed. Over time I'm betting these losses add up and once in a while, an owner might have to add coolant. The system has a pressurized and an upressurized "side" and the upressurized side is "open" by default. In fact there is no overflow tube out of the reservoir; in the event an overfill under high temp and pressure results in an overflow, the excess liquid will exit along the same path as the vapours that result in this residue -- up the top and along the black tube until either dripping or condensation occur.

    Even more astounding, the owner of the above car does not exist. Despite alleged "sightings" and "footprints," there are no actual data to document the existence of Sasquatch.

    All this isn't to say the OP doesn't have a massive, actual, unintended coolant leak. However adding coolant isn't unusual.
    WRX Info Links, Courtesy TheJ
    Man is a brute.... If you're cruel to him, he respects and fears you. If you're kind to him, he plucks your eyes out. Alexis Zorbas
    I lied. I cheated. I bribed men to cover the crimes of other men. I am an accessory to murder. But the most damning thing of all... I think I can live with it. And if I had to do it all over again - I would. Benjamin Sisko
    DISCLAIMER: Opinions expressed are the author's alone and are inherently worthless.

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    Registered User nsibanez's Avatar
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    Quote Originally Posted by SD_GR View Post
    My car does not have a cap there at all; it only has one radiator cap, not two. Yet the white residue is present on my car also. It always has been. The overflow container is not sealed, and the coolant has a substantial % water. Since the temperatures are elevated it isn't unreasonable to expect losses -- evaporation via the opening through which the black overflow tube enters the reservoir. This opening is not sealed. Over time I'm betting these losses add up and once in a while, an owner might have to add coolant. The system has a pressurized and an upressurized "side" and the upressurized side is "open" by default. In fact there is no overflow tube out of the reservoir; in the event an overfill under high temp and pressure results in an overflow, the excess liquid will exit along the same path as the vapours that result in this residue -- up the top and along the black tube until either dripping or condensation occur.

    Even more astounding, the owner of the above car does not exist. Despite alleged "sightings" and "footprints," there are no actual data to document the existence of Sasquatch.

    All this isn't to say the OP doesn't have a massive, actual, unintended coolant leak. However adding coolant isn't unusual.
    You learn something everyday
    Especially subarus.....seems like they're much different then what you're used to. Not conventional in any way. Like everything about them is another breed of car

    Thanks for the lesson. I hope you don't mind me picking your brain

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    Moderator rage-wrx's Avatar
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    Like mentioned earlier I'd check the coolant overflow tank when the engine is cold vs when it is warm on level ground. Coolant expands. So,if coolant is at the low mark when the engine is cold ,you'll see that it is near the high mark when the engine has warmed up.

    2011s have 3 caps,1.radiator cap,2.overhead reservoir cap,3. Overflow tank cap.



    PS. Only fill the reservoir with Subaru 50/50 super coolant. Do not touch any of the other caps. You'll introduce air into the system.
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    Registered User nsibanez's Avatar
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    Quote Originally Posted by rage-wrx View Post
    Like mentioned earlier I'd check the coolant overflow tank when the engine is cold vs when it is warm on level ground. Coolant expands. So,if coolant is at the low mark when the engine is cold ,you'll see that it is near the high mark when the engine has warmed up.

    2011s have 3 caps,1.radiator cap,2.overhead reservoir cap,3. Overflow tank cap.



    PS. Only fill the reservoir with Subaru 50/50 super coolant. Do not touch any of the other caps. You'll introduce air into the system.
    Unless you need to burp the system you open the overhead one...highest point. (Still need to do mine, and remember the procedure in the manual is pretty specific)
    But still SD brings some good information and a good point which is most likely the OP problem

    You wouldn't happen to be a shop foreman would you SD_GR

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    Quote Originally Posted by nsibanez View Post
    You wouldn't happen to be a shop foreman would you SD_GR

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    Oh no! I'm at the cutting edge of incompetence and should not be around tools or machines! I ask people on the forum for help and search threads etc. Very useful stuff here.
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    Man is a brute.... If you're cruel to him, he respects and fears you. If you're kind to him, he plucks your eyes out. Alexis Zorbas
    I lied. I cheated. I bribed men to cover the crimes of other men. I am an accessory to murder. But the most damning thing of all... I think I can live with it. And if I had to do it all over again - I would. Benjamin Sisko
    DISCLAIMER: Opinions expressed are the author's alone and are inherently worthless.

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