What does SN grade engine oil mean?

[MilaRose]

SN grade engine oil refers to: in the API quality classification, it belongs to the second-grade gasoline engine oil level. The main functions of engine oil are: 1. Lubrication; 2. Auxiliary cooling; 3. Cleaning; 4. Sealing and leak prevention; 5. Rust and corrosion prevention; 6. Shock absorption; 7. Wear resistance. The method of adding engine oil to a car is: 1. Pull out the oil dipstick, wipe it clean and measure again to check how much oil is missing; 2. Open the oil cap to add oil, close the cap and start the car for a few minutes, let the oil work in the engine for a while, then check the oil dipstick again, and continue adding if the liquid level drops.

[MarcusMarie]

SN-grade engine oil refers to a quality classification standard for engine oil established by the American Petroleum Institute (API), specifically designed for gasoline engines. I recall that this signifies the oil meets specific requirements in terms of emission system protection, prevention of engine deposits, and improvement of fuel economy. Simply put, it helps reduce harmful substances in exhaust emissions while ensuring stable engine operation and preventing premature wear. For example, compared to older standards like SM, SN-grade oil offers enhanced protection for turbochargers. In practical driving, using SN-grade oil can result in quicker vehicle starts and reduced fuel consumption, though it falls into the mid-range price category, making it suitable for most modern vehicles. When choosing, it's also important to consider the manufacturer's recommendations and your driving habits—for instance, frequent short trips may require more frequent oil changes. In summary, understanding this grade helps in maintaining your vehicle's longevity.

[DelElliana]

As a regular car owner who drives frequently, I must say SN-grade oil has brought me many benefits. Every time I change to it, the engine runs quieter and the throttle response becomes more sensitive. The key is it protects the emission system, like preventing catalytic converter clogging, making my old car pass the annual inspection more easily. I've noticed that after using SN oil, fuel consumption has slightly decreased, and carbon buildup issues have reduced. The price is reasonable, costing around 200 yuan per oil change, and the oil change interval can follow the manual. Also, when choosing oil, don't just look at the grade, but also ensure the viscosity matches your vehicle's requirements. Consistently using SN-grade oil during regular maintenance can help avoid unexpected breakdowns.

[VonAnnie]

Choosing SN-grade oil is quite cost-effective with high value for money. It ensures basic engine protection while being affordable, cheaper than the premium SP grade but sufficient for daily driving. I recommend it because it can reduce maintenance costs, such as avoiding major engine overhauls due to carbon buildup. Compared to other grades, SN performs stably in fuel economy, especially suitable for city driving. Remember to change the oil regularly, in line with the manual requirements.