To change the engine oil, there are a number of steps to follow. But above all, the choice of products and especially the quantity of oil necessary for the oil change must be mastered.
What type of oil to choose for changing?
The motor oils sold in the market are so diverse that it is often difficult to make the right choice. Drivers quickly succumb to the oil on promotion or choose at random. Still, it makes more sense to refer to the recommendations of the manufacturers or the dealers-dealers. So :
– For city driving: use a semi-synthetic oil which is more suitable for short journeys but also for frequent stops and starts.
– For sporty driving: opt for a synthetic oil to guarantee lubrication up to the engine power.
– For motorway or mixed driving: prefer mineral oil which corresponds to long journeys with few gear changes and sudden mechanical movements.
How much oil to change?
The amount of oil to use for an oil change varies depending on the make and model of the car. Usually, this information can be found in the User Manual or are given by the dealer. In the case of used cars, the dealer has the obligation to provide this information during the sale. However, the mechanic may still need more oil when changing the oil. Difficulties during the operation and unforeseen events cannot be ruled out.
In addition, other criteria such as the category of the car, the mileage, the consumption, or the driving mode can influence the quantity of oil for the oil change. Here are some indicative benchmarks:
• For an engine volume of 1.8 to 2.5 l, approximately 3.5 l of engine oil is required;
• For an engine volume greater than 2.5 l, between 4.2 and 4.4 l of engine oil are required.
Why does an engine need more and more drain oil?
With time and wear and tear, especially for cars that have passed the 200,000 km mark on the odometer, lubricant leaks are very frequent. Consequently, the quantity of oil required during oil changes increases. Oil changes should be done 1 to 3 times a year. The condition of the deteriorating engine and the need to replace some parts are the main reasons. In addition, leaks can also be explained by:
• Deterioration of the intake manifold control system;
• Leakage of the engine liquid level sensor;
• A leak in the oil filter;
• An oil overflow which causes the load to overflow on the rings;
• Poor ventilation.
• The car has not been used for a long enough time.