When did u need to refill ur Engine Coolant Reservoir?
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This is a discussion on When did u need to refill ur Engine Coolant Reservoir? within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Well, I've got 2,342 miles on my rex now, I've had it since November. I noticed today that my Engine ...

  1. #1
    Registered User XtianLA's Avatar
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    When did u need to refill ur Engine Coolant Reservoir?

    Well, I've got 2,342 miles on my rex now, I've had it since November. I noticed today that my Engine Coolant is below the L marking. Do you guys refill this urself, or go to the dealership? Reason I ask cuz the guys at my dealership are kinda aholes, so I would rather do this myself since it seems relatively simple. What type of coolant would anyone recommend, or have u guys used in there?

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    Registered User XtianLA's Avatar
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    anyone? gotta try to get this taken care of today, I don't want to be driving around on low coolant. thnx.

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    Registered User JRod's Avatar
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    Are you checking it when the engine is cold? When cold it should be at the low mark, when hot it should be at the high mark.

    If you engine is cold add a little antifreeze/water mixture until it reaches the the low mark. If hot, do the same for the high mark. There are some premade antifreeze mixes but its a waste of money. Just buy some good antifreeze (prestone, zerex, etc...) and mix with about %50 water depending on your climate. Most antifreeze bottles have a mixing chart on the back.
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    Registered User XtianLA's Avatar
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    Yeah, engine is cold, downstairs in the garage, earlier today. o to check it hot should I just check it idle...or maybe go around the block then check it?

  6. #5
    Registered User JRod's Avatar
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    Nope, you can check it hot or cold. You just have to use the L line for cold and the H line for hot. It may be better to check it cold I think.

    The coolant expands slightly when hot so you have to read from the higher line on the reservoir.
    2002 WRX Sedan-Silver
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    Moderator fengshui's Avatar
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    I just ran into this problem myself. I have 13K miles on the WRX, and I noticed the coolant was below the L mark when the car was both hot AND cold, so I bought some prestone and consulted some folks. The concensus was that if you are just adding some coolant to top it off and bring it to mid L and F marks, then just add it. If you flush the coolant out then you should do the 50/50 mix to fill it back up. So after adding a tad bit, now i have an almost full bottle of prestone collecting dust, great.

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  8. #7
    Registered User XtianLA's Avatar
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    yeah, I'm just a little below L, I think I'll go to Kragen and see how much some of that Prestone is. Thanks for the help guys.

  9. #8
    OMG WTF MainFrame's Avatar
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    or you could just add a little water, it has better cooling capabilities than antifreeze

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