Coolant from the radiator and engine oil are supposed to be separate and never mixed. If they are mixing, you probably have a problem with either the engine’s cylinder head gasket or perhaps an oil ...

If you should discover that your coolant is mixing with your engine oil, you have a major problem. While your motor oil and coolant are both essential to the proper operation of your vehicle's engine, ...

The first conclusion many mechanics will arrive at is that the engine’s head gasket has blown, allowing the oil and coolant to mix. Have a look at the dipstick. If the engine oil is milky, then this ...

As engines get very hot, coolant helps distribute heat to help prevent overheating and engine damage. It also adds antifreeze protection and acts as a lubricant for some of the engine’s components. If ...

Coolant is an essential liquid for internal combustion engines, but it doesn't last forever. Here's how long an open bottle will remain fresh.

Checking up on your coolant is easy to forget, but an engine’s coolant is just as important as oil when it comes to your car. Coolant does raises the boiling point of the cooling system in summer, ...

If you've ever been topping off your car's coolant and accidentally poured the brightly colored liquid all over the engine, you understand that it can be both frustrating and concerning. Coolant is ...

Something I've realized over the past few years poking with a large variety of cars: Nobody has low coolant or low oil sensors! I drove an '88 Mazda RX-7 with both, and they were quite valuable! The ...