then put the hoses back on, but fill the hoses with water so no air gets trapped in the core. You can also pull the heater core hoses off the back of the engine, and flush it both ways with a garden hose. Waiting for the fans to come on means its hot enough that the T stat should be wide open. Then idle the car rad cap off till the fans turn on, then bleed the air out of the t stat housing, top off the rad as needed as it warms up, if it burps and the rad level drops, the T stat opened up for a a few seconds and took the coolant, the cold water from the rad made it close again. then put the T stat back, the upper hose back, then dump one gallon of straight antifreeze in the rad, start the car full the rest of the way with hose water. put the hose in the rad, fill it up, then start the car, run it till clear water comes out the upper hose, then turn the hose off, then run the car till no water comes out the upper hose. Good to goĭonthis works well, but if you put the lower hose back on, leave the T stat out and the upper hose on the housing, and off the rad. Installed new thermostat and closed it all up. Then added 50/50 mix until it flowed out of intake. put the lower hose back on the rad and added 1 gallon of 100% coolant. I then rinsed out the radiator same method, both directions, until crystal clear. Used a small nozzle and flushed the heater core and hoses going both directions. Type: OAT Based (Organic Acid Technology) Color: Orange. Notes: Dex-Cool 50/50 prediluted extended life antifreeze/coolant. ![]() Check if this fits your 2006 Pontiac Grand Prix. Once it ran crystal clear I disconnected the heater hoses. Prestone Antifreeze/Coolant Domestic Orange 50/50 Premixed 1Gal. If you mix the old and new it can turn to a gel/goo. Be VERY careful if you are changing from the old (green) stuff. Yanmar recommends this for all of their engines now. Reversed the flow by shooting the water through the lower hose so it came out the intake. 3 We are using the Shell brand of the Dexcool in our 3JH2E. ![]() If a vehicle was repaired under this recall, there should be a GM recall decal affixed. 2003, but was only good until July, 2004. Though Dex-Cool is supposed to last up to five years or 150,000 miles, some say changing the coolant every two years can avert many of the. Used a hose nozzle wrapped in a rag and inserted it into the intake where the thermostat sits. Applications include the 2004-’08 Pontiac Grand Prix. Removed the thermostat housing and kept it attached to the hose. ![]() We provide a buying advantage with verified reviews and unbiased editorial research. Its a good idea to purchase a gallon container or two of DEX-COOL from an. 4 Answers FOR answered 5 years ago No big deal. 1.5/5 (78 reviews) Are you this business Updated. It is recommended that only DEX-COOL be used when coolant is added or changed. Removed the lower radiator hoses from radiator. / Questions / Pontiac / Grand Prix / Wrong coolant Wrong coolant Asked by Steve at 11:46 PM about the 2002 Pontiac Grand Prix SE Question type: General I have a 2002 grand Prix and I put green coolant in it by a mistake when I should have used Dex cool.I filled the resovoir.
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