I always go for maintenance, but what's wrong with changing oil? Regardless of industry, what's easiest way to kill loyal customers? You often do maintenance in same store and you believe what people say and don't doubt it. If you don't cheat, who will you cheat? For things like maintenance, it's better to change places often ~ Problems are indeed a bit of a hassle, but it's better than being killed! I'd rather create trouble than send money.
Automotive lubricating oil is very often used in maintenance. High-quality lubricating oil not only protects engine and reduces number of oil changes, but also reduces gasoline costs. But if lubricating oil is used improperly, it will cause car to break down! Since original poster asked today, let's talk about four misconceptions common car users have about using lubricating oil!
Lubricating oil turns black, should it be changed?
Some friends think that blackening of lubricating oil is result of serious oil wear, so it needs to be replaced. This is actually only for lubricating oils without silent and dispersant, and lubricating oil used in modern cars tends to have Sisite and dispersant added. This type of detergent washes away rubber film and black deposits adhering to piston and disperses them in oil, thereby reducing formation of high temperature deposits in engine, so color of lubricating oil tends to turn black. after being used for a certain period of time, but this does not mean that oil has gone bad.
The handyman in repair shop often asks landlord to change lubricating oil. Either he is not professional enough and does not realize it, or he is deceiving landlord to make more money. Will landlord dare to go to such a "black shop" in future?
Do I need to change my lubricating oil often?
Like I just said, lubricating oil with detergent can turn black. Only replenishment without replacement can only make up for lack of engine oil, but cannot fully compensate for loss of lubricating oil performance. The lessor should be aware that during use of lubricating oil, its quality will deteriorate due to pollution, oxidation and other reasons, and at same time there will be some consumption, which will reduce quantity. In order for the lubricating oil to fully utilize its characteristics, it still needs to be replaced after a certain period of use.
Supplements are sometimes helpful
Some friends feel that addition of lubricating oil additives may play a more important role. Here I can responsibly tell landlord that this understanding is wrong! A true high quality lubricating oil is a finished product with many engine protection features. The formula already contains various additives, including anti-wear additives, and lubricating oil pays most attention to formula balance to ensure full play. various properties.
Adding other additives on its own not only cannot provide additional protection to vehicle, but also easily reacts with chemicals in engine oil, resulting in a deterioration in overall performance of engine oil. Isn't it redundant?
Can you add more butter?
There are also some friends who think that if you can add more lubricating oil, you can add more, like you will suffer if you add less, you will have to top it up every time. Alas~ Why do I see so little! Inform lessor that amount of lubricating oil must be controlled between upper and lower lines of dipstick scale. Because too much lubricating oil will leak from gap between cylinder and piston into combustion chamber to burn and form carbon deposits.
Carbon storage is bad! These deposits increase compression ratio of engine and increase tendency to knock, deposits in cylinder are in a hot state and can cause early combustion, getting into cylinder, they increase wear of cylinder and piston and will accelerate contamination of lubricating oil.