Now the average oil change interval is about 10-15,000 kilometers. And in other European countries, often this interval can be increased up to 20. 25000! And all of us are used to changing precisely according to this framework, that is, after a certain mileage. BUT is this correct? And why on some modern machines do power units no longer go for a long time? Say. they develop their warranty period and then bend. The main reason here lies in the oil, mileage and traffic jams of big cities. Let’s figure it out.
THE CONTENT OF THE ARTICLE
- Marketing component
- What is a motor hours?
- Oil and its resource
- How to calculate hours?
- VIDEO VERSION. RECOMMENDED.
Of course, if you are used to buying new cars, rolling back warranty 150,000 (going through 15,000), and then turning the car into a trade-in, then this material is not for you. Nevertheless, this article is for someone who wants his engine to work for a long time, sometimes even more than the manufacturer’s declared term.
Marketing component
For new cars, the manufacturer dictates the oil change to us, and this process miraculously coincides with the next MOT. That is, we are already somehow getting used to giving a ton of money, arriving at the dealer in 15,000, they will twist something for us, watch something, and here’s 6000. 10,000 rubles! EXPENSIVE, yes of course EXPENSIVE! Therefore, drivers are now looking at the interservice interval and the larger it is, it is believed that it is better. I have already said about Europe. that it is not uncommon for them to travel between 20 and 25,000 kilometers, because their work prices are even higher.
BUT IS IT CORRECT? Of course not. And now many car owners live in big cities with a bunch of traffic jams and threshing engines in them, it is also worth adding auto starts in the morning or set to a timer (turn on by time or by ambient temperature).
And here you need to understand that the replacement should not take place by mileage, but BY MOTOR HOURS! And believe me. this greatly reduces the replacement interval by kilometers, by about half (but more on that later).
What is a motor hours?
This is a certain period of time, in this case, one hour during which your power unit (motor) worked. hence, “MOTO”. “HOUR”. It seems that everything is very simple, you can easily calculate the crankshaft speed during this time.
So for example, at idle, we have 900. 1000 revolutions per minute, we multiply by 60 we get. 54000. 60000 per hour the crankshaft rotates.
At higher speeds, let’s say the track and 4000 rpm., 60 X 4000. 240000 and so on.
No one considers the exact information on how many revolutions the shaft made, it is not particularly necessary, it just has an average component, it is called MOTO HOUR, it includes city trips with traffic jams and long standing, as well as track accelerations.
It is clear that the shaft rotates, there is wear on the walls, liners, bearings, etc. BUT if a good lubricant is poured, say advanced synthetics, it can neutralize this wear for some time, making it minimal.
Oil and its resource
And now the most interesting part is that no one will tell YOU at the dealer that certain lubricants need to be changed after a certain number of hours, even if your mileage is small, even very small.
Video: Through How many hours to change the oil in the engine. Know Required
WHY? Yes, because the protective properties are lost, that is, a sufficiently large engine wear will go
Now conditionally there are only three types:
- This is mineral water. By the way, now in our country it has almost disappeared, it should be replaced after a maximum of 150 engine hours (MCH). She also starts to burn through such a run, clogging your power unit
- Semisynthetics. It is worth changing it through 250MCH
- Synthetics. Here is the biggest run, there are cheap options (API SJ / SL, Mb 229.3, Vw 502, Bmw LL98). a replacement of 250MCH. There are more advanced (improved crack) compositions (API SM / SN, Mb 229.5, Vw 502.00 / 505.00, Bmw LL-01). here the replacement is 300MCH. The best cleaned compounds (PAO tolerances, Mb 229.5 Vw 502/505 / 503.01 Bmw LL-01). 350MCh. Thus, in this class of lubricants, the run-up is from 250 to 350 operating hours. There are still others, but they are very expensive. It is an ester, the price tag is 3-4 times higher than ordinary synthetics, it is simply not profitable to pour it.
Exceeding these thresholds is not recommended. ONCE AGAIN. the properties of the lubricating compounds will end, and if you exceed the hours, this will be DIRECT engine wear. He will not work for a very long time, God forbid, the warranty period.
How to calculate hours?
By the way, on many expensive German foreign cars (for example Mercedes, BMW and others), there is a special counter that counts them. And then it just shines for you. that you need to go to change the oil, after it is reset to zero and you ride until the next MOT. That is, here, as if there is no exact interval HOW I THINK THIS IS VERY CORRECT.
German cars often have turbines, the oil wears out even faster because it passes through some components of the turbocharger, removing heat from it and lubricating it, that’s why the MOTOR HOURS will be reduced here! Even the “top-end” synthetics are often recommended to be changed after 300MCH.
First way
However, on other modern cars there are no such counters! But there is a calculation of the average speed. And here, including the logic, you can display the interval.
It is done very easily and simply, you can even make a small formula.
P = SM (where P is the mileage, S is the average vehicle speed from the on-board computer, M is the engine hours).
Ideally, after changing the oil, we need to reset the average speed counter and drive at least 2,000 km., On low mileage it just will not be relevant. Then you will have enough data to calculate everything.
On my car it is 29.5 km / h, I pour a synthetic compound designed for 350MCH. Thus 35029.5 = 10325km. Here is the real replacement period, BUT NO 15000km.
Of course, if you have the main work outside the city, wander around the intercity, then your average speed will be higher. For example, my friend has 50 km / h, it also pours synthetics. So much for 30050km / h = 15000km.
However, residents of large cities such as Moscow or St. Petersburg, where you can stand for several hours in traffic jams, this figure can be only 18. 20 km / h, then 30018 = 5400 km.
Second way
Another replacement option is fuel consumption. In the ideal case, in a mixed cycle, my car will consume 8l per 100km. If you calculate how much he will spend on 15,000. 1,200 liters, then I must replace the oil! 1200. remember this figure.
However, with winter heating, in traffic jams, the consumption is much greater, I have 10.6 liters. As a result, for 15,000, the consumption is 1590l, which is 390l more. If you derive the formula and calculate how much you need to run until you reach 1200l, you get about 11320km.
Again far from 15000km!
In my opinion, changing the hour is correct! And with the increase in the number of cars in cities, and therefore traffic jams, we will come to this. IF MARKETOLOGISTS ARE ALLOWED.
Now we are watching a video version of the article.
This concludes, read our website, subscribe to our channel. Sincerely your AUTO BLOGGER.
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