I have a 2001 Chevrolet Impala 3.4. Should I keep the dexcool antifreeze in my vehicle? Or should I change it to the green stuff, perhaps the prestone. Currently my plan is to remove the dexcool by pulling the radiator plug out and draining it each time my car runs until it comes out clear. Then I will probably switch over. Is it advisable not to go green? The class action suit against dexcool is something I am worried about. Someone said I should be draining where the thermostat hose is, but I cant find it. Information about the pros or cons and your suggestion about what coolant I should use would be appreciated and also the location of the thermostat would be helpful.
It will not hurt to change over to the green anti-freeze. How I would do it is similar to how you are thinking. Loosen drain at bottom of radiator, Remove the fill cap, Put a water hose in and turn the water on, let it spill over as it won’t hurt anything. And start the engine, let it run till the fluid is clear water coming from the drain. Turn engine and water off.
Let the water drain from radiator. Tighten drain plug. Fill with 50/50 green anti-freeze/water mixture. Start engine and top off coolant level. The thermostat is located at the end of the upper radiator hose. There is a small screw here (brass, be gentle) unscrew it a couple of turns and once the engine warms up some fluid should come out of it, this helps bleed out the air from the system. You may need to do this a few times to get the air out. Then you should be good to go.
BE Careful as the coolant can get extremely hot and burn you. If you are not comfortable doing this yourself, have it done! Shouldn’t cost you $80.00