How does the viscosity of oil effect the performance of a car?

I know that the viscosity raises when the temperature goes down and the viscosity decreases when the temperature rises, but how does that affect the performance of the car?How does the viscosity of oil effect the performance of a car?
Viscosity is another word for how thick the oil is. In high temperatures, the oil heats up and gets thinner., like water. When it is cold the oil gets thicker, like honey. This is not going to have a huge affect on car performance. Make sure you are using the correct oil for your car. The numbers, 5w30, 10w40, etc. are referring to the viscosity of the oil. If your car is older and the seals may be going bad, then you may want to use a thicker oil so it will not leak out as easily. Also, as the oil is used in your car it gets burned up and ends up getting thicker and darker. This causes it to not circulate as well. Not to mention metal shaving from your engine go into the oil and then get recirculated in your engine, doing untold damage to it. Just make sure you use the proper oil for your car and change it at the recommended intervals and it should be fine.How does the viscosity of oil effect the performance of a car?
Vescosity is important for your car's engine. Too viscose, and the oil will ';gunk up'; and lower your engine's performance. On the other hand, too low viscosity can cause you oil to no lubricate enough and cause undue wear on your engine.





You should check with a professional for advice on the specific oil your car needs for maximum performance.
If you have a high performance engine, or live in a hot climate, the engine will run hotter. If you use an oil in that engine that is too thin, it can cause the engines bearings and other metal parts to wear faster. It will also run very hot all the time. On the other hand, if you use an oil that is too thick it will cause the engine to work harder. That can cause poor performance, lower fuel mileage and other problems down the road.
Heat makes the oil thinner, so it won't stick to metal parts as


well. When this happens, metal parts wear out more quickly.
Not any.
imagine the effort you would have to put in if you were swimming in treacle compared to water,same thing applies,the engine has to work that little bit harder when the oil is cold!weird analogy i know but you can see what i mean