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 Technical Discussion; Just wondering what's the best preventative maintenance there is I can do on my 97 Deville to try to prevent ...
  1. #1
    hendrob is offline Cadillac Owners Fanatic
    Automobile(s): 1997 DEVILLE
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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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  3. #2
    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.

  4. #3
    [NortHStaR]'s Avatar
    [NortHStaR] is offline Cadillac Owners Fanatic
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    Re: The best preventative maintenance for my 97 N*?

    ^^ yess ^^

  5. #4
    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

  6. #5
    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.

  7. #6
    hendrob is offline Cadillac Owners Fanatic
    Automobile(s): 1997 DEVILLE
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    Re: The best preventative maintenance for my 97 N*?

    Will do , thanks Ranger !

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