Oil is an important part of the vehicle as it will be acting as a cooling agent and in some case they will be needed for the hydraulic systems. This clearly stated the need for oil level maintenance in the vehicle at regular intervals. There are numerous types of oil and the right one can be selected according to the requirement. Normally, the low-friction oils will be very economical as every bit of it will be used but this might increase the routine maintenance cost. Hence, people have started to move towards the pricey oils. Many people think that pricey oil will suit only the sports cars, but it is not the fact.
OW along with a number is the code that is used to represent the vehicle oil used where O represents the viscosity of the oil and W means the winter certification. The number used will state the viscosity of the oil at various temperatures. For example, 20 will show the viscosity of the oil at a high temperature and lower designations will represent less frictional and thin oil. Even the car manufacturers like Honda and Acura state the type of oil that will suit their vehicles and give long life to them. 0W-20 is said to be complete synthetic oil that improves the fuel economy by 1.2 percent when compared to 10W-30.
This does not mean all the vehicle owners have to change their oil with 0W-20 in order to improve their fuel efficiency in the next service. Each engine will have different needs, and the right one has to be found and then changed. There will be warranty provided with the car, but they will be voided if the wrong oil is used. In such situations, the cost has to be borne by the owner only. Eventually, one has to be very careful while changing the engine oil.