dexcool vs conventional?

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Cadillac Catera and Cimarron Forum Discussion, dexcool vs conventional? in Past Cadillac Vehicle Discussion; well i have the engine almost back together in my 97 catera after replacing the oil cooler. the parts came ...
  1. #1
    Jamies97Cat is offline Cadillac Owners Member
    Automobile(s): Cadillac Catera
    Join Date
    Jul 2008
    Tarpon Springs FL

    dexcool vs conventional?

    well i have the engine almost back together in my 97 catera after replacing the oil cooler. the parts came in today and all i have left to do to the car is put the radiator, fan, and hoses and a few plugs and air box back in. my question is, since my block is totally drained of coolant and all the houses are too, can i put green coolant in the car. i know gm says use dexcool only but why, what the hell is the difference. i want to fill it up and drive it for about 500 miles and flush it again to get any left over sludge out of it so i didnt want to spend a small fortune on dexcool just to waste it soon. would it be wise to put green coolant in it? thanks for any info.

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  3. #2
    cateraowner is offline Cadillac Owners Fanatic
    Automobile(s): Cadillac
    Join Date
    Oct 2007

    Re: dexcool vs conventional?

    I don't know what the difference is, just seems like gm's way of making more money.

    I can't see a problem of putting regular coolant in as long as you are 110% sure all the coolant is drained. I heard that the 2 coolants turn corrosive when mixed.

    another suggestion, since you're only driving it 500 miles and flushing it again, use only distilled water, or a 20-80 mix.

  4. #3
    retho78 is offline Cadillac Owners Connoisseur
    Automobile(s): Cadillac
    Join Date
    Sep 2007

    SmileRe: dexcool vs conventional?

    I have been using the conventional coolant in my catera for two years and so far no problem. I flushed out the dexcool first and using the supertech brand (all vehicles)from walmart.

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