Radiator Coolant is something many of us only inspect by one criteria: "Is there enough?". In actuality, your coolant is like all of the fluids in your car. Coolant wears out, losing it's additives over time. Eventually, the efficiency of your coolant drops. Furthermore, coolant gets dirty. Unlike the engine's oiling system, your car's cooling system does not have a filter to trap dirt and other contaminants. If left to circulate for long periods of time, contaminants could block essential water passages in the engine, preventing the coolant from doing its job.
Auto manufacturers know this, and recommend coolant service intervals in your owner's manual. Most cars have an expected coolant life of 30,000 miles, or 24 months, however, some newer cars are more efficient and make use of high-tech coolants.
In the past, your options were to take your vehicle to a garage and drop it off for the day, while the service was performed. Extra charges such as hazardous waste disposal, parts and labor are all added into the equation, driving up your bill. Another alternative is buying a flush and fill kit and taking several hours to do the service at home. Finding a way to capture all of the waste fluid is extremely difficult, and you are usually left with fluid draining into the streets or soaking into the ground.
The "Coolant Changer" uses a suction connection at the radiator spout to draw out the old radiator fluid. The unique, patented process of the machine will extract water vapor, even during very low temperatures. This is due to the change of gravity pressure within the engine. After all of the used coolant is removed from the vehicle, a valve is turned, and the new coolant automatically is transferred to the vehicle.
This is possible due to the vacuum created inside the cooling system. The new coolant is drawn into the vehicle and no air pockets are created. The entire process takes place at the radiator spout (or overflow tank, if not equipped), making for a clean, fast, and environmentally sound transfer of hazardous fluids.
Another big advantage of the Coolant Changer is the clear tubes for liquid containment shows how dirty the old coolant is. First we remove the used coolant from your vehicle. Then, the entire cooling system is flushed and replaced with fresh coolant.
Dex-Cool Coolant is more expensive, but vehicles that use Dex-Cool coolant have much longer coolant service intervals. Generally, GM cars and trucks built after 1994 use Dex-Cool, as well as several other car makes and models.