As we all know, the specific standard system of motor oil, there are currently two major systems in the world, namely: american petroleum association standards (API system, referred to as "American standard"), European Union Automotive Engineers Association standards (ACEA system, referred to as "European standard"). In addition, each automobile main engine manufacturer (vehicle manufacturer) also has its own oil standards.
Logically speaking, when changing the oil of the car, it is best to give priority to the oil that meets the automaker's own standards. For example: if we change the oil for Volkswagen, we know that Volkswagen has its own set of "VW standards", so the oil is best to meet Volkswagen's "VW" standard, and we will be more at ease when we use it.
However, in the auto repair industry, many people only care about the markings, regardless of the level! For example, I only know the 5W-40 label, and then as long as it is fully synthetic, it is OK, but as for the level of this oil, I don't understand it at all! Even this knowledge is rarely talked about by the media! So today I will analyze it in detail for your reference!
It is best to choose "in line with the certification of automobile manufacturers"
Motor oil! Let's take the Volkswagen brand as an example
At present, the automotive OEM's own oil identification system is: Volkswagen's VW standard, BMW's longlife standard (LL standard), General Dexos standard, Mercedes-Benz MB standard, Ford's M2C standard... Of course, there are some less commonly used, such as the B71 standard of French PAS (Citroën, Peugeot, DS), Renault's RN Peugeot, Porsche standard and so on...
So: if when we buy oil, we can't determine whether the oil meets the "manufacturer certification system" of the original factory of our car, then how can we make the right choice? ——Today we will seriously talk about this topic that makes many car owners headaches! First of all, we have to distinguish between "China VI A and China VI A previous models" and "China VI B models" (with "particle trap" and without), because the oil they need is different.
Judging from the situation in China, the oil standard required by the original factory of "China VI A and China VI A previous models" is basically the VW50200/50500 standard (popularly known as the "Volkswagen 502/505" standard); while the "National VI B model" requires the use of VW50800/50900 standard (folk name "Volkswagen 508/509" standard).
China VIB "New Volkswagen" is recommended to use
VW508/509 Engine Oil! C5 alone is not recommended
In fact, Volkswagen's oil standard is evolved with reference to the European standard ACEA system. Let's first talk about "Volkswagen Six B Oil": "Volkswagen 508/509" standard itself is based on the European standard C5 level, is a "low shear" oil standard, the label is basically 0W-20 mainly.
Both the European Standard C5 and the "Volkswagen 508/509" are low ash oils, which are specially prepared for the National VI B model with a "particle trap". With low ash oil, the exhaust pipe is less likely to block. From the perspective of physical and chemical indicators, "Volkswagen 508/509" and European standard C5, whether it is ash, alkali value, sulfur and phosphorus content, shear value... It's pretty much the same.
But in terms of specific performance: lubrication protection performance, sludge prevention, fuel economy, oxidation resistance and long-term effectiveness... "Volkswagen 508/509" hanging European standard C5! —— Basically, the "Volkswagen 508/509" can be regarded as an "upgraded version" of the European standard C5. ——So we say that the national six B Volkswagen new car selection oil must be careful! It is seriously recommended that you choose the "Volkswagen 508/509" standard oil! That is to say, even if you find a bottle of European C5 oil, you think it is "good enough", but for the public, sorry, this oil is almost meaningless!
"Old Volkswagen" recommends using VW502/505 engine oil!
But A3/B4 oil can also be used
However, before July 2019, Volkswagen was basically "National VI A and China VI A pre-model", and the exhaust pipe did not have a "particle trap", so according to the specifications of Volkswagen manufacturers, the "Volkswagen 502/505" standard engine oil should be used. This is a "high shear" oil standard, and we are familiar with the European standard A3/B4 belongs to the same category, the label is basically 5W-40 mainly, so we can compare these 2 standards.
From the perspective of physical and chemical indicators, "Volkswagen 502/505" and European standard A3/B4, whether it is ash, base value, sulfur and phosphorus content, shear value... It's basically the same. Then in terms of specific performance: piston carbon deposit prevention, oxidation resistance and long-term effectiveness are more stringent in terms of "Volkswagen 502/505"; while the European standard A3/B4 is more demanding in terms of lubrication protection!
In "human words", it is said that the oil lubrication protection performance of the Volkswagen 502/505 standard is not as good as that of the European standard A3/B4, but the life (oil change interval) is very prominent. Therefore, there is no such thing as "who is better than whom" between them (especially in the case of oil change within 10,000 kilometers in China, the long-life advantage of "Volkswagen 502/505" is not prominent).
Most oils are "multi-certification"
Therefore, when choosing, you should see the back of the bottle clearly
Of course, if an oil can meet the European standard A3/B4 and the "Volkswagen 502/505" standard at the same time, it is obviously better! The advantages of long life, slow decay, and strong lubrication protection are all there! So is there such an "all-in-one" engine oil? - Not a lot!
For example, we find a bottle of 5W-40 oil, let's read its level standard: first we can see the word "API SP" on the front of the bottle, indicating that this is a motor oil (SP) that meets the highest standards of the American standard; at the same time we can see the words "ACEA A3/B4", indicating that this is a oil that meets the European standard A3/B4 standard.
In the detailed specification list on the back of the bottle, we can see the words VW50200/50500, which is obviously a standard bottle of "Volkswagen 502/505" motor oil. Of course, we can also see the words MB229.3/229.5 and RN0700/0710. This is the oil level identification system of Mercedes-Benz Automobile and Renault Automobile, respectively.
Obviously, this oil is very suitable for "China VI A and China VI A previous models"! More about engine oil we will break down later! For example, BMW's complex oil identification system, hehe! Absolutely subvert the cognition of BMW owners! Stay tuned!
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