What is the classification of fully synthetic engine oil?

[Casey]

Currently, fully synthetic engine oil is mainly classified as SN grade. The API on engine oil stands for the American Petroleum Institute, and it is divided into SA, SB, SC, SD, SE, SF, SG, SH, SJ, SL, SM, and SN grades, with the grade increasing sequentially. SN grade is currently the highest grade of engine oil. Below is some additional information: 1. Benefits: Synthetic oil does not produce sludge and has a much better self-cleaning effect. At the same time, various additives are added to fully synthetic engine oil, which are mainly reflected in good wear resistance, better lubrication, and stronger temperature adaptability. Therefore, the performance of fully synthetic engine oil is superior to that of mineral oil in all aspects. 2. Introduction: In order to achieve better lubrication effects, humans have used chemical methods to synthesize various engine oils based on base oil. This is what is known as chemically synthetic engine oil.

[EvangelineAnn]

The classification of fully synthetic engine oil is primarily based on the API (American Petroleum Institute) standards, such as alphanumeric combinations like SN and SP. The 'S' prefix denotes oils for gasoline engines, with higher numbers indicating more advanced formulations. The latest is SP, which significantly outperforms the older SN in terms of wear resistance and cleaning performance. Additionally, there are international standards like ILSAC's GF-6A and GF-6B, which focus on fuel economy and environmental protection. The European standard ACEA A5/B5 is also commonly used, especially in high-end vehicles. These classifications ensure the oil protects the engine under various driving conditions, reduces carbon deposits and sludge, and extends engine life. I frequently check these details because using the wrong grade can impact vehicle performance, so it's important to carefully review the labels on the packaging when selecting oil.

[SanGabriel]

I found that for full synthetic oil grades, just look at the API rating. The currently popular SP grade is better than SN at handling high-pressure engines. There's also the ILSAC GF-6 standard, divided into Type A and B. Type A suits most cars, while Type B targets small-displacement turbocharged vehicles. The grade level reflects the oil's cleaning capability and anti-oxidant performance, preventing sludge buildup. When maintaining my car, I always refer to the manual's recommendations - some vehicles exclusively require SP grade oil, and using lower grades may cause increased fuel consumption or abnormal noises. I advise car owners not to skimp on this expense, as regular oil checks can prevent major repairs.

[Ursula]

The grades of full synthetic oil, such as API SN, SP, or ILSAC GF-6, indicate the oil's protective capabilities. SP is the new standard, offering longer change intervals and reduced emissions. When driving, I always pay attention to this, as higher-grade oils can withstand high temperatures and aggressive driving, preventing engine damage. When selecting oil, just match the grade with your vehicle model.

[OHolden]

The classification of full synthetic engine oil has evolved from the old API SF standard to the new SP standard, enhancing protection for turbocharged engines. Additionally, ILSAC GF-6 has introduced fuel efficiency standards. Based on my experience with different grades, the new standards can reduce engine wear and extend oil change intervals.