Engine manufacturers at the design stage are determined with brands of oils depending on operating conditions and design features. After that, life tests of engines are carried out and recommendations for use are issued. So, before choosing, you need to look in the instruction manual, what exactly is needed. The oil indicated in the instructions is the right choice.
If you do not want to fill in the original branded oil, you can do with the non-original one. In order not to lose the guarantee, you should choose it with the admission and approval of the auto concern. The approval of the auto manufacturer is one of the main guidelines when choosing. The designation of approval indicates the name of the car brand and a special index that is comparable to the factory one.
Motor Oil Expert Comments:
Based on the requirements of the car engine, the engine oil is selected according to two main criteria: API class and SAE viscosity. Modern engines require low viscosity oil because it has low energy-saving properties and saves fuel. Liquids with a viscosity of not more than 30 are poured from the conveyors. If the mileage of the machine is large and increased consumption is noticeable, then oil with a higher viscosity index should be poured.
The main property of engine oil is viscosity and its dependence on temperature over a wide range. Here is the standard SAE classification: 10W-40. The first designation “10W” denotes the application temperature and “40” the viscosity. Let’s talk about each parameter separately.
The viscosity of the oil is indicated by the most noticeable numbers on the canister – the SAE classification. The two numbers, separated by the letter W, indicate that it is all-season. The first digits indicate the minimum negative temperature at which the engine can be cranked. For example, with the designation 0W-40, the lower temperature threshold is -35 ° C, while for 15W-40 it is -20 ° C. The number after the hyphen indicates the permissible range of viscosity change at 100 ° C.
In average climates, it is recommended to use “universal” 10W – suitable for most cars. If the winters are harsh, then you should fill in oil of a class of at least 5W (best of all – 0W). For summer use, 10W is suitable.
The classification of oils according to the conditions of use has been repeatedly supplemented, but the principle of division into two categories – “S” and “C” has remained. Category “S” (Service) includes oils for gasoline engines, category “C” (Commercial) – intended for diesel engines.
The API levels, in ascending order of quality requirements, are subdivided in the “S” category into grades (SA, SB, SC, SD, SE, SF, SG, SH, SJ, SL, SM and SN). The farther the second letter is from the beginning of the alphabet, the better. For gasoline engines, the most modern mark is SN, and for diesel engines – CF. To designate universal oils that are used for gasoline engines and diesel engines, a double marking is adopted, for example, SN / CF.
All fluids with a quality higher than SL can be classified as energy-saving – they allow you to save fuel. The difference in real operation will be 2-3%. It is unlikely that you will feel it.
The most recent API-grade oil should be selected. The package must be marked with a mark of at least class SM or SN. It is this class that gives the best performance of the car engine and reduces waste consumption.
Use the oil recommended by the manufacturer. If you choose on your own, then it is selected according to two main parameters: according to the group and the quality class. It will also be helpful to know if different auto oils can be mixed.
1. There is a European ACEA. In it, the requirements for (passenger cars) A5 / B5 are much stricter than those of SM for the American one. Accordingly, the oil that received certification for it is of higher quality.
2. Starting with SM and SN, the oil can be used in turbocharged engines by default. What is the note on the package? It is extremely dangerous to use it in supercharged engines where it is not specified that it is suitable for turbo engines.
3. Viscosity also changes with the service life. If 5W30 is recommended for a new motor, then after half of the resource declared by the manufacturer, 5W40 is already used. Depending on the climate, there may be a deviation from the SAE recommended by the manufacturer.
4. Fuel savings due to less viscous oil – the very minimum. And the use of less viscous oil than recommended by the manufacturer is harmful to the engine. Especially in the heat. System pressure drops and motor lubrication deteriorates.
Which is better to choose for the car: 5W-40 or 5W-30
5W-40 – has a higher density, due to which improved protection properties. 5W-30 is more fluid, easier to pump, more economical in terms of fuel … Then the question of 5W-30 or 5W-40 is for the most part not the choice of the driver, but the technical features of the engine. The Japanese and Americans have a 30 higher preference, while the Europeans develop in favor of 40.
How much oil to fill in NISSAN ALTIMA?
The volume of oil to be poured for NISSAN ALTIMA depends on the selected modification (choose the model, year and type of engine in the form above). But consider also the oil filter, which absorbs some of the oil. After changing, check the oil level for several days. Top up if necessary.
What kind of oil to fill in summer and winter?
By default, NISSAN experts recommend pouring 5W-30 or 5W-40. For all recommendations on which oil is better to fill in summer or winter, check with the manufacturer. Because there are a lot of variables that depend on the region of use – dry or humid climate, in the mountains, in the steppes, in urban mode or on the highway, etc.
Which oil is best for ALTIMA
The Nissan Engine Oil brand is officially recommended by the manufacturer. This does not mean that others are worse or better.
The manufacturer recommends choosing the oil according to the condition of the engine (mileage) and the conditions of vehicle use. Recommendations can be obtained from a dealer, an engine oil store, or the websites of oil manufacturers.
For cars with gasoline and diesel engines, the engine oil is most often different. For automatic transmission (automatic), manual transmission (mechanics), CVT (variator) and a robot, it can also differ intolerances and viscosity. Pay attention to this when buying!