Diesel engine oil

Diesel engine oil has the role of helping to cool the engine, limit the wear of the elements that make it up and keep it “clean”. Choosing the right oil is essential for the proper operation of the engine.

Depending on the ambient temperatures, diesel engine oil can change thickness and fluidity! When temperatures are cool, the engine oil becomes thicker and less liquid. Dirty, thick oil can overload the battery and starter, making starting your vehicle more difficult. However, a more fluid and liquid oil will reach all areas of the engine faster, which will make the latter less sensitive to wear.

It is therefore important to check and change the engine oil and the oil filter regularly. If you do not know when to carry out these checks, look in your maintenance booklet or ask a car specialist for advice. Indeed, depending on the year and the engine of your car, the frequency of the interviews will be different.

Check the engine oil level

Here are some steps that will help you control the level of your diesel engine oil:

  1. First, make sure your vehicle is on a flat, cold engine.
  2. Locate the engine oil dipstick: usually placed on the top of the engine block, the dipstick is easily identifiable.
  3. Pull on the dipstick and remove it completely.
  4. Wipe your dipstick with a clean cloth to remove excess oil. Put the gauge back to the stop in its “housing” and pull it out.
  5. Now you must see your oil level. If it is between the “mini” and “max”, you can close the hood and hit the road. If not, add it without exceeding the mark of the “maxi”.

Tip: always have a can of oil in the trunk of your car. This will allow you to have on hand and to add if necessary.

Choosing the right engine oil for your car

There are 3 types of engine oil:

  • Semi-synthetic oilsuitable for city journeys
  • Mineral oilessential for mixed or road ducts (road, motorway, etc.)
  • Synthetic oilrecommended for sports driving and offering a quality of performance
  • On a can of oil drain, there is a wealth of information such as viscosity or the capabilities of the latter. It will be important to check:

The ACEA standard on the back of the oil can. This is followed by letters (A, B or E).

A for gasoline engine, B for diesel and E for heavy-duty engines. Namely that today all the engine oils that make up the market are provided for both gasoline engines and diesel engines.

These letters are accompanied by numbers 2, 1 or 3 (in order). The 2 representing the entry-level then the 1 and 3 which identify respectively the middle and high-end. Note that Long Life Oil has the number 4.

The viscosity of the engine oil is expressed by 2 grades.

The 1st grade reflects the viscosity of the oil cold: the ability to start the engine and prime the oil pump: 0W for -30 ° C, 5W for -25 ° C, 10W for -20 ° C and 15W for -15 ° C.

The 2nd grade reflects the kinematic hot viscosity which ranges from 20 to 60. The higher the number, the hotter the oil will be (and vice versa).

Attention: the ACEA standard and the viscosity of your oil is not chosen at random. Indeed, to avoid any nasty surprises, check the recommendations of your manufacturer.