Water in the oil – Coolant leak due to non-watertight seal (cylinder head gasket, etc.). If this happens, there is a leak and water is getting into the oil. Water in motor oil can cause serious damage to your engine – the oil will be denatured and no longer effectively cooled.Click to see full answer. Thereof, how do you get water out of car oil?Pour the contaminated motor oil into the 2-liter bottle and twist the cap on securely. Turn the 2-liter bottle upside-down over a refuse bucket. Poke a few holes in the bottom of the 2-liter bottle to allow airflow into the bottle. Allow gravity to pull the water downward and out of the bottle cap.Secondly, what does it mean when oil and water mix in a car? Originally Answered: Wat must I do if my car engine oil and water is mixing? Typically head gasket or intake manifold gasket failure. Typically head gasket or intake manifold gasket failure. If you have coolant in the oil, and a stream of small bubbles coming up from the radiator after (be careful!) Considering this, can I drive my car with water in the oil? Significant amounts of water and/or coolant in your oil will make it appear milky. Milky oil is compromised and will not lubricate the engine properly. Driving with milky oil will cause more friction, heat, and abrasion, which will cause premature wear on engine internals, and over time, to engine failure.Will water in engine oil evaporate?To clean the water out of your engine oil without boiling, you just have to keep removing the water vapour from the space above the liquid (ie – the enclosed crankcase volume), and the water in the oil will continue to evaporate in an effort to re-establish it’s equilibrium vapour pressure.