: The best preventative maintenance for my 97 N*?

04-22-09, 12:18 AM
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 !

04-22-09, 12:49 AM
:thumbsup:Change the coolant as much as possible.

04-23-09, 03:08 AM
^^ yess ^^

04-23-09, 08:30 PM
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

04-23-09, 11:30 PM
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.

04-27-09, 06:34 PM
Will do , thanks Ranger !