The choice of oil for cars is quite a controversial issue, which can confound. The surest way out when choosing a motor oil is to follow the car manufacturer’s recommendations. Various features oils save fuel, increase the resource to work well in the winter, where the additive perfectly adapted to the low temperatures and the machine easily start.
If you choose oil viscosity, mileage must be taken into account. The higher the figure the high temperature viscosity, the higher temperatures and more severe stress on the engine oil will retain its viscosity (do not forget about the automaker’s recommendations).
A very important thing is not to overdo with the choice of the oil viscosity, if we neglect the automakers recommendations, you can simply just destroy the engine internals.
Modern engines require the use of semi-synthetic or synthetic oils, these products are better retain their essential properties.