For 4s maintenance, just use the original pure brand fully synthetic 0w20. According to the maintenance manual, it should be maintained once a year or 10,000 kilometers.
For outside maintenance, use 5w30 or 0w20. Fully synthetic, Mobil, Castrol, AMSOIL, Shell, Idemitsu and other brands are sufficient. Maintenance is done once every 10,000 kilometers or once a year, as long as the oil quality is maintained.
Information expansion:
Mobil:
Mobil basically follows the technology stream and has always insisted on developing synthetic oil technology. The biggest advantage of Mobil synthetic oil is that it is not easy to crack, the oil change interval is relatively long, and at the same time, it has better sports performance and high temperature resistance. It sounds like a lot of advantages, but in fact they are all produced by one technology.
This technology is a base oil called polyalpha-olefin developed by Mobil. It is a patented technology of Exxon Mobil. The English abbreviation of the jargon is PAO. It comes from the ethylene and propylene dispersed from the gas and natural gas in crude oil, and then undergoes polymerization and catalysis by professional equipment, some very complex chemical reactions, and then refines the base oil. The molecules of this base oil are very neatly arranged and have strong resistance to external factors, such as extrusion, oxidation, thermal stability, viscosity changes, and resistance. With this technology alone, Mobil has captured a large market.
Many manufacturers who choose Mobil engine oil tend to pay more attention to performance. For example, many German cars and performance cars prefer Mobil engine oil. In addition, some economical models, such as those that change the oil every six months or every 10,000 kilometers or 15,000 kilometers, mostly choose Mobil.
Shell
The most outstanding feature of Shell is its cleanliness. After the engine is used for a period of time, it is easy to produce sludge and carbon deposits. Heineken's engine oil has a formula specifically designed to remove these dirt. It can always bring out this dirt from your engine, and then filter it out, allowing your engine to keep working better. state. The characteristic of power response can be reflected in engines with relatively high assembly precision. For engines similar to F1 racing cars and various fuel-efficient and durable Japanese cars, a relatively large proportion of them are made of Shell. In our daily use of the car, we can also feel that when we step on the accelerator, the power response will be accelerated. This can be regarded as Shell's special skill.
Castrol:
Then let’s talk about Castrol. The most impressive thing about Castrol is the various celebrity endorsements, so this thing is obviously not a unique technology.
Its unique skill is that it has better protection when the engine is cold started. In principle, it has better low-temperature fluidity, and it has some special formulas. It feels a bit like hanging a glass when we drink liquor. When your car is turned off, a small part of the oil is still stuck to the engine and will not flow back to the oil pan completely due to gravity. Then when you start it up again the next day, there will be an extra layer of engine oil for protection.