8. Check the Coolant and Radiator
An engine that’s overheating is in the exact same category as one without enough oil – close to death. If your car is overheating, you need to stop sooner rather than later. As I said in the video above, one trick you can try is to turn the air conditioner off and the heater on full blast. That may help temporarily lower the temperature enough to get you to help. But the longer that gauge stays in the red, the closer you’re coming to a huge repair bill. Stop your car.
Checking your cooling system is pretty simple. When the car’s cool, check the radiator overflow (or the radiator itself) to make sure there’s plenty of water – which should look green or yellow because it should have anti-freeze (which is also anti-heat) in it.
The rule of thumb is to flush and fill your radiator every couple of years.
Two signs of cooling trouble: if there’s a colorful puddle under your car, you’re leaking coolant. And if the temperature goes up when you’re idling in traffic, you may have a low coolant level or other issues. Have it checked out.