Hope you all had a great Fourth of July.... nice weather for a
> change....
>
> I'm due for a 30K coolent service and browsed the sunday papers
> looking for prices and service. Something confused me...( well,
> lots of things confuse me).....
>
> The dealer advertises "Drain, Flush and Refill"
>
> The newspaper car shop advertise, "Radiator Drain and Refill". >
> I'm assuming that "Drain, Flush and Refill, means dumping the fluid,
> filling with water and a flushing chemical, running engine with
> thermostat opens, and then draining all the water and flushing
> chemicals, and filling the cooling system with a 50/50 mix.
>
>
> I'm assuming that "Drain Radiator and refill" means just draining
> the radiator and refilling it with the proper mixture. Done with cold
> engine and thermostat closed. No flushing chemicals.
>
>
> Does GM actually require to flush the cooling system completely at
> 30K intervals.....or does the dealer just drain and refill the
> radiator, i.e. same service as a shop but a fancier name..
>
> Doesn't flushing a cooling system require a lot of water to get all
> the chemicals out??? Purpose of Dexcool was to conserve
> resources.... i.e. 5 year 150,000 mile, but the auto
> manufacturer wants me to drain and flush every 30,000 miles, using up
> a lot of antifreeze and polluting a lot of water.
>
> Damn am I becoming confused !!!!