Today’s cars all come with a radiator overflow tank or another form of expansion tank system. Even worse, coolant has a sweet taste which makes it appealing to kids and animals. Antifreeze is toxic, making it less than ideal for pumping into the environment. The downside to this type of system is the pollution it creates. With this system, there was an escape when the coolant got hot. In these older cooling systems, multiple vents were used to allow the extra pressure out. However, older vehicles didn’t come with an overflow tank. The radiator overflow tank has a very important job, making it impossible to imagine a vehicle without it. Radiator Coolant Overflow Tank Function Diagram Is a Radiator Overflow Tank Necessary? It will remain in the tank until it’s needed by the engine once again. Expanded coolant can go into the overflow tank to cool down. With the added overflow tank, the pressure is better regulated.

An over-pressurized cooling system can lead to boiling liquid that can burst through any weak spot. If it were to become too hot, the fluid would expand, causing major issues in the sealed system.

However, the amount of coolant in the overflow tank will vary based on how much is needed to cool the engine at the time.Īs long as the system works as designed, the coolant should never rise too high in temperature. On the other hand, if there’s too much pressure, coolant will be pulled from the cooling system back into the overflow tank.īecause the cooling system is a closed unit, the amount of coolant within the system should never change. When the level in the cooling system gets too low, coolant is withdrawn from the storage to enter the cooling system. You get a lot of quality for that price point, a typical VW trait.Conclusion How Does a Radiator Coolant Overflow Tank Work? With prices starting around $41,000, it’s cheaper than some rivals but more expensive than others. On the road, many have remarked at the amazing difference the optional AWD and additional electric motor makes, delivering superlative handling and a fun, quick and dynamic drive. It also feels very satisfyingly high-tech and futuristic to simply climb into the driver’s seat, key fob in your pocket, and the car startup and recognize you automatically. The standard 19.2 cubic feet of cargo space is also quite generous, more so than most competitors.Īt the center of the interior is an impressive and intuitive 12-inch touchscreen display, to which you can wirelessly connect your smartphone for seamless integration. However, it didn’t take long for people to start to appreciate the quality, as well as the cool features, clean lines, ambient lighting and more. Some were initially disappointed by the ID.4 interior as it was clearly less flashy than the proposed interior shown in previous concepts that led to the ID.4. That’s still some way behind the 330 miles offered as a max range for the Tesla Model Y, but it’s very respectable.

Its latest version has had its fast charging speed boosted from 125 to 135 kW, and also comes with a greater single-charge driving range of up to 268 miles. The Volkswagen ID.4 competes with many other emerging electric SUVs like the Ford Mustang Mach-E, Hyundai Kona Electric and the Hyundai Ioniq 5. This compact electric crossover has proven to be a big hit in both European and North American markets. All the major OEMs are getting in on the electric bandwagon, and the VW ID.4 has proven to be something of a game-changer for Volkswagen. The EV segment is no longer just high-end Teslas and mid-range Nissan Leafs and Chevy Bolts anymore.

Coolant symbol volkswagen