Choosing a 5w-30 oil for your car? In this article, we will tell you what to look for when choosing a 5w-30 viscosity oil.
5w-30 oil is typically used for modern cars with more than 70 miles on the road.
When choosing 5w-30 oil for your car, we recommend buying motor oil that meets the API classification SN, SN+, SP. For Asian (Japanese and Korean), as well as American cars it is recommended to use oil with ILSAC GF-5, GF-6 classification.
For European cars, it is recommended to choose the oil 5w-30, which corresponds to the ACEA classification (A3/B3/B4). For diesel engines with DPF, it is recommended to use oil meeting ACEA C3 classification. For German automobiles, it is recommended to use 5w-30 oil, which meets the requirements of such manufacturers: VW, BMW, MB.
5w-30 engine oils are there to protect engine elements against friction and provide satisfactory engine work with the preservation of cylinder hermiticity. Correct oil selection contributes to the trouble-free operation of the system for a long time. The grease 5w-30 is one of the most popular among different synthetic and semi-synthetic lubricants.
How does 5w-30 mean?
5w-30 oil is one of the most popular products among car owners. One of the main parameters that are taken into account when choosing a lubricant is the viscosity index. It affects the degree of engine protection from the effects of dry friction and the tightness of working cylinders. Do not lose sight of the fact that the engine is heated up to 194 °F. The oil can heat up to 302 °F, which will affect the viscosity of the product.
The viscosity grade is usually marked with the SAE symbol. It indicates the temperature range in which the operation of the internal combustion engine is safe. The letter W indicates that the engine oil is designed for low-temperature operation (in winter).
The number before W indicates the minimum temperature at which the engine can be started safely. The number after the letter indicates the viscosity factor of the motor oil at the operating temperature of the engine.
The correct oil increases service life. Using the wrong oil can lead to engine parts breakdown and the necessity of major repairs.
The main objectives of engine oil are:
- reducing the wear of engine parts;
- resistance to corrosion, aging, and other negative factors;
- neutralization of carbon deposits and sludge removal;
- maintaining thermal stability.
5w-30 Motor Oil Best Choice
Best 5w-30 motor oils on the market:
Castrol Edge 5W-30 Advanced Full Synthetic Motor Oil
K&N 5W-30 Full Synthetic Engine Oil
Royal Purple High Performance Motor Oil 5W-30
Shell Rotella Gas Truck Full Synthetic 5W-30 Motor Oil for Pickups and SUVs
Motul 8100 X-Clean + 5W30
Liqui Moly Top Tec 4200 5W-30 Synthetic Motor Oil
Red Line 5W30 Full-synthetic Ester Formula Motor Oil
Amsoil Signature Series 5W-30 Synthetic Motor Oil
Characteristics of 5w-30 oil
5w-30 oil has excellent characteristics and many advantages. This lubricant is excellent for cars operated in a city where the engine elements are adversely affected:
- Running at idle speed for a long time.
- Continuous driving in traffic jams.
- Short distance driving.
- Increased dustiness in the atmosphere.
The 5w-30 lubricant, thanks to special additives and its unique formula, has the following functions:
- protects engine parts from damage;
- removes soot from the surfaces;
- reduces the corrosion effect;
- cools engine parts and components.
Synthetic or Semi-Synthetic Oil 5w-30?
Synthetic and semi-synthetic oils differ in both properties and price. Synthetic has more features and costs more, semi-synthetic has a higher flow rate and costs less.
Synthetic oil is artificially created. It is synthesized from oil or natural gas with the addition of additives. The advantages of synthetic oil are:
- Resistant to temperature fluctuations.
- Significantly extends engine life, if properly chosen.
- Works better under load conditions (idling, starting, and warming up).
- Resistant to temperature fluctuations.
- More fuel-efficient. Synthetic oil is slower to work off because it penetrates into the smallest of gaps.
Semi-synthetic oil is made from a mixture of mineral and synthetic components in different percentages, it is allowed to mix both 70% synthetic components with 30% of mineral, and the composition of 50% to 50%, this will depend on the oil cost. Semi-synthetic formulations are also supplemented with a package of additives.
Advantages and disadvantages of semi-synthetic lubricants:
- Creates normal engine operating conditions.
- Protects from wear.
- Possesses good penetration ability.
- Low volatility.
- High technical values.
- More affordable price – costs less than synthetic.
It is not recommended to use synthetic compounds for older generations of engines, as they are more aggressive to oil seals than mineral and semi-synthetic ones and can cause leakage. The optimal choice for such engines is semi-synthetic, modern semi-synthetic oils perform their functions well if you choose them according to engine recommendations and comply with the necessary replacement intervals.
Important: The SAE classification only considers the viscosity of the product.
Classification of SAE engine oils 5w-30
All engine lubricants are classified according to their viscosity. This classification is called SAE. According to this form of classification, they may be divided into classes according to their fluidity, that is to say, their ability to spread over the surface of the part and at the same time to adhere to the metal surface. This classification is used worldwide.
SAE and API classifications 5w-30
- Car oils are classified according to two key indicators: the scope of use: petrol/diesel engine, turbocharged engine, oil viscosity.
- The standards by which lubricants are classified are considered the same for all oils. The most common is the SAE and API classifications.
- The API standard introduces two groups of quality classes, prefixed with S (gasoline engines) and C (diesel).
- The letter after the prefix defines a particular class, assigned to new classes in order of alphabetical order: API SP oil meets more stringent requirements than API SL.
- If a particular oil grade can be used in engines for both types of properties, a double class is specified – for example, API SN / CF.
API classification divides oils into three groups according to their purpose and quality:
- S – for gasoline engines;
- C – for diesel engines;
- EC – universal energy-saving oil.
The other letters indicate the class the grease belongs to. All classes differ from each other:
- API SL – oils for engines in cars manufactured after 2000. For multi-valve, turbocharged, with work on lean mixtures, with increased requirements for energy efficiency and environmental friendliness.
- API SM – oils for engines of cars manufactured after 2004. Ability to be certified according to ILSAC energy-saving category.
- API SN – oils for engines of vehicles manufactured after 2010. Designed for oils used in the most advanced gasoline engines of passenger and sports cars and small vans. Some oils in this category may comply with ILSAC GF-5 specification and qualify as energy-saving.
- API SP – oils for engines of cars manufactured after 2020. Designed for oils used in the most advanced gasoline engines of passenger and sport utility vehicles and small vans. Some oils in this category may comply with the specification ILSAC GF-6.
ILSAC 5w-30 motor oils classification
- GF-4 – oils for engines of cars manufactured after 2004, SAE viscosity grades 0w-20, 5w-20, 0w-30, 5w-30 and 10w-30. These oils are compatible with catalytic converters.
- GF-5 – oils for engines of cars manufactured after 2010 meet quality requirements of API SN classification. SAE viscosity grades 0w-20, 5w-20, 0w-30, 5w-30. They are characterized by improved energy efficiency, enhanced anti-wear properties, reduced sludge formation in the turbine, a noticeable reduction of carbon deposits in the engine.
- GF-6– oils for engines of cars manufactured after 2020, includes improvements: fuel economy and preservation of fuel economy, preservation of engine life, protection from wear.
Recommended oil brands 5w-30:
- Liqui Moly.
- Red Line.
- Lucas Oil.
- Quaker State.
- Royal Purple.
Cost of 5w-30 engine oil:
Up to $30: synthetic-based 5w-30 oils.
Up to $50: 5w-30 synthetic oils from popular brands.
Up to $80: synthetic oils 5w-30 premium brands.
5W-30 motor oil is the most popular engine product. It is suitable for both diesel and gasoline engines. In order for the lubricant not to harm your powertrain, you should be extremely responsible in choosing this product.