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The best preventative maintenance for my 97 N*?

987 Views 5 Replies 4 Participants Last post by  hendrob
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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:thumbsup:Change the coolant as much as possible.
^^ yess ^^
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
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.
Will do , thanks Ranger !
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