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Coolant Flush

This is a discussion on Coolant Flush within the General Help forums, part of the LSx Technical Help Section category; I know we have magical DexCool bullshit in our cars. But, how long does this shit really last? At how ...

  1. #1
    CrapMaster samson_420's Avatar
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    Coolant Flush

    I know we have magical DexCool bullshit in our cars. But, how long does this shit really last? At how many miles is it a good idea to change this crap out?

  2. #2
    old timer blue02Z's Avatar
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    i changed mine prolly 10k ago at around the 64k mark. i've seen it last easily over 100k miles but if you feel the urge, change it out

  3. #3
    Life in the Fast lane sunsetorangess's Avatar
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    Met. Sunset Orange
    01 SS

    I read somewhere i cant recall, its a good idea every 60k or 3years. Whichever comes first. It becomes a corrosive liquid once it breaks down. Like said above whatever floats your boat.
    J
    2001 SS, Its not the car its the Driver that matters....

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    Senior Member KyleLs1's Avatar
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    do it every 30,000 miles at least

  5. #5
    CrapMaster samson_420's Avatar
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    I'll change it. Should I flush it with anything other than water?

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    Senior Member KyleLs1's Avatar
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    get it flushed with a proper flushing machine... not very expensive and it will do a way better job

  7. #7
    old timer blue02Z's Avatar
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    Navy Blue Metallic
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    you can do it at home, i know gm makes some coolant flush so you could stop by the dealership and get you a bottle, i'm sure your local parts place has some to tho. how many miles are on it? you might also consider replacing the hoses. good luck

  8. #8
    CrapMaster samson_420's Avatar
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    Quote Originally Posted by blue02Z View Post
    how many miles are on it? you might also consider replacing the hoses. good luck

    It has right under 70k.

    What's wrong with just a water flush? That's all I have ever done on any car I have owned. . . .The last one went 130k without any cooling system issues.

  9. #9
    Senior Member Danger731's Avatar
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    I water flushed mine at 100,000 k then used straight water, southern california.

  10. #10
    CrapMaster samson_420's Avatar
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    I think I 'm gonna drain it, run it on straight filtered water for a day or so, drain it, then fill it with DexCool.

  11. #11
    old timer blue02Z's Avatar
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    that will work, i have done that plenty of times before, the flushing fluid just dissolves the gunk in there where as the water can leave it in there. according to the gm stuff you put straight water in it then add the flush and let it run with the heater on for 30 minustes or so then your done.

  12. #12
    Impounded
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    i'd dump the dexcool,its total crap.Ask any dealer techs that work around it every day.

  13. #13
    Senior Member SeVeReDiStOrTiOn's Avatar
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    Quote Originally Posted by samson_420 View Post
    I think I 'm gonna drain it, run it on straight filtered water for a day or so, drain it, then fill it with DexCool.
    Prestone also makes a couple different flush additives that'll remove gunk/rust. One is a leave in for like 600 miles and the other is used like a regular flush...they're like 8 bucks at any parts store.

  14. #14
    The Bandit Wesman's Avatar
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    Quote Originally Posted by KyleLs1 View Post
    get it flushed with a proper flushing machine... not very expensive and it will do a way better job
    Exactly, thats what I just had done on mine. Flushing it in the driveway just makes a huge mess, you don't get everything out, and you're flushing it with regular water (not distilled) which has minerals and deposits in it that you don't want in your cooling system.

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