The best preventative maintenance for my 97 N*?
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Northstar Engines and System Technical Discussion Discussion, The best preventative maintenance for my 97 N*? in Cadillac Engine Discussion; Just wondering what's the best preventative maintenance there is I can do on my 97 Deville to try to prevent ...
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    hendrob is offline Cadillac Owners Fanatic
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    The best preventative maintenance for my 97 N*?

    Just wondering what's the best preventative maintenance there is I can do on my 97 Deville to try to prevent an HG problem, before it may happen. Thanks !


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    STSj90 is offline Cadillac Owners Fanatic
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    Re: The best preventative maintenance for my 97 N*?

    Change the coolant as much as possible.

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    [NortHStaR] is offline Cadillac Owners Fanatic
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    Re: The best preventative maintenance for my 97 N*?

    ^^ yess ^^

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    hendrob is offline Cadillac Owners Fanatic
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    Re: The best preventative maintenance for my 97 N*?

    Thanks guys, just got the car , 80,000 on her, it does have the main seal leak but no gasket leak so I will give the system a flush and refill with a good brand of antifreeze. thanks again for the tip !! Bob

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    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: The best preventative maintenance for my 97 N*?

    Don't flush it. You can't get all the coolant out, thus if you flush, you can't get all the water out so you'll never have a 50/50 mix unless you use a refractometer and keep adjusting. just drain and refill with a 50/50 mix of Dex & distilled water.

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    hendrob is offline Cadillac Owners Fanatic
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    Re: The best preventative maintenance for my 97 N*?

    Will do , thanks Ranger !

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