[ct91rs]

Are you going to flush the system, or just add some coolant? If it's a '98 it probably came with Dex-cool from the factory. As imida stated, Dex-cool has better and longer lasting properties than the traditional green anti-freeze. Do not mix Dex-cool with green anti-freeze.

Over the last year or so, many companies (Prestone, Peak, etc.) have come out with an extended life antifreeze, that has been given an all makes, all models designation. Hence, you can mix this with any antifreeze, however, if you mix it with the traditional green anti-freeze, it will not retain the same extended life.