The history of Mercedes-Benz (part one)
How to buy the right engine oil for your car?
*The right oil increases the life of the car engine*
Let's get to know the numbers written on the engine oil canMost people either change their car oil themselves or take their car to a car repair shop or dealership and ask professionals to change the oil. In any case, one of the most important aspects of changing oil is choosing the right oil. Choosing the right oil does not just mean choosing between mixed or conventional oil. In fact, you should also pay attention to the numbers on the engine oil label. You have definitely come across something like "10W-30" or "5W-20" when buying engine oil, but you may never have known about these numbers. Even if the oil was changed by a professional, you will usually be given a sheet that shows when the oil was changed and the numbers of the oils used in your vehicle. Now the question that arises: What do these numbers represent?
In short, the numbers before and after W indicate viscosity and weight. The letter "W" itself stands for Winter. As you know, viscosity means the thickness of a fluid. In the case of engine oil, it indicates the thickness of the oil under certain temperature conditions.
Oil viscosity
The first number The number on the left side of W refers to the viscosity of the oil when temperatures are low. The number on the right side of W refers to the viscosity of the oil at higher and hotter temperatures. If the first number is low, it means you have thin oil. Whenever the ambient temperature is colder, it is better to have thin oil in your engine. Otherwise, the thicker oil will flow throughout the engine and make it harder to lubricate the components. The second number The second number depends on two things. The temperature of the engine and the heat of your living environment. If you live in a tropical area with high heat such as the southern regions of the country, the second number should be high and it means that the oil is thick. It is good to have thick oil at high temperatures because the oil does a better job of lubricating engine components. If you check the manual of your vehicle, you will find that the manufacturer has informed you of the appropriate viscosity grade of oil to use in the vehicle. Be sure to keep in mind, however, that the manufacturer doesn't always take into account where you live or where you might drive your vehicle.
Classification of engine oil services In the United States, the American Petroleum Institute (API) sets standards for measuring the properties of passenger car engine oils. Cars of the 1920s, 1950s, 1970s, etc. need a different formula of engine oil. This led to the emergence of different classifications of engine oil, which will also change in the future. Gasoline engines The current service classification for today's gasoline vehicles is SN PLUS, which was introduced in 2018 by API. For new vehicles (2019 and newer), if you want to make sure the motor oil you're buying has this classification, refer to the "API Donut" icon that can be found on all motor oil bottles.- For older cars (2018 and older), you can also use motor oils with the "SN PLUS" classification. But you can also use older classifications depending on when your car was made. The following table refers to these categories. Categorizing the years of making the situation SN PLUS can be used for today's gasoline cars and current older models SN applicable to current 2018 and older gasoline vehicles SM can be used for current 2011 and older gasoline vehicles SL can be used for 2004 and older current gasoline vehicles SJ can be used for gasoline vehicles from 2001 and older SH should not be used for vehicles manufactured after 1996. outdated SG should not be used for vehicles manufactured after 1993. outdated Do not use SF for vehicles manufactured after 1988. outdated SE should not be used for vehicles manufactured after 1979. outdated SD should not be used for vehicles manufactured after 1971. outdated SC should not be used for vehicles manufactured after 1967. outdated Do not use SB for cars built after 1951. outdated SA should not be used for cars built after 1930. outdated For this reason, all the oils you buy now must be equal to or better than the previous standards like SG, SF, SJ, SL and SM. Check your vehicle manufacturer's manual to find the right oil for your car and at least 2 other specifications that match your vehicle's engine. Don't just look for the brand when choosing an oil. Your manual should recommend an oil that has a specification such as "SN API Compliant".
What is the reason for blowing the L90 Or LOGAN oil filter?
Maybe it has happened to each of us, when checking and visiting the condition of the car engine, you notice that it is swollen above the oil filter or around it. Since no damage other than the deformation of the filter is evident, the blame is often pointed at the filter manufacturers and it is believed that the product has a manufacturing defect. But most of the time it is not. So what is the cause of blowing the car oil filter
When things go right
Under normal conditions, oil is introduced by the oil pump throughout the engine in order to lubricate and reduce the friction of the moving parts of the car, as well as to cool the various internal components of the engine.
High flow from the oil pump causes the pressure relief valve to open And as a result, the system pressure is adjusted. Every car has a predefined normal oil pressure that is set by the car manufacturer and controlled using a pressure relief valve. A pressure relief valve is usually located on the oil pump, where it opens and closes to regulate oil flow.When there is a problem in the car system
The pressure relief valve is stuck open, allowing oil to return to the sump.
When the valve is stuck in the open position, the vehicle may experience low oil pressure, as oil flow immediately returns to the oil tank. When the valve is stuck in the closed position, the lubrication system can be affected by the maximum flow rate of the oil pump or actually increase the oil pressure.
The pressure relief valve is stuck closed and allows the full volume of pump oil to reach the filter.
Since the oil filter is located after the pump, it is often exposed to uncontrolled increases in oil pressure. If this happens, the filters begin to deform or "swell" which, if not corrected, may cause the filter baseplate to bend and allow the washer to shift. A displaced gasket leads to rapid loss of oil, which can lead to the destruction of the car's engine.
A swollen or bloated oil filter is a warning sign that the system's pressure relief valve has failed at some point. In any case, the sticking valve must be repaired to prevent damage to the filter and possibly the car's engine.