The phenomenon of oils for Asian motors
LLK-International, a subsidiary of the LUKOIL Group, has announced its entry into the market of motor oils for Asian cars. Excerpts from the official dossiers of new products are shown below. But the consumer may ask: why such oils? Do Asian cars have any special features?
My late teacher, head. Department of Motor Oils VNII NP Ph.D. Viktor Reznikov said: we are witnessing globalization, the merger of companies, the borrowing of technologies, the location of car factories all over the planet. Does this mean that the car is becoming unified? No, it doesn't. "Genetic" traits will not disappear soon - for our age is certainly enough. To know more, check out: best 0w-20 oil
An American motor is an American motor, and a European motor is a European one. The engines of European cars are more stressed and operate at higher loads than American ones. They also have higher crankshaft revolutions.
It is not for nothing that the American classification of engine oils API and the European ACEA exist. Is it possible to establish an exact correspondence between these documents? No, you can't - the differences in the methods of testing oils adopted in the USA and in Europe are too great.
Especially there are many differences in the requirements for oils for diesel engines, which is due to the differences in the designs of "Europeans" and "Americans". For example, the latter do not "get sick" from the polishing of the cylinders that occurs when the piston is shifted. And among European car manufacturers, preventing cylinder polishing is one of the important requirements for engine oils. Thanks to Mercedes - it was their initiative.
Well, well, what about "Japanese" and "Koreans" - what is known about them? Historically, when designing oils for Asian engines, special attention is paid to the operation of the gas distribution mechanism. Both the design of the engine and the materials of the rubbing pairs play a role. It is not without reason that Japanese automakers attach particular importance to the effectiveness of antiwear additives.
By the way, the Japanese "wear" method JASO was included in the international specification Global DHD-1, which combined the modern requirements of the American, European and Japanese classifications. But it is far from its full implementation, so the appearance on the Russian market of oils for Asian cars is quite justified. And here the fun begins ...
They are low-viscosity
We look at the aforementioned "dossier": oils GENESIS GLIDETECH - 0W-20 and GENESIS ARMORTECH A3 / B4 - 5W-30. Indeed, their summer viscosity grades are 20 and 30, respectively.
Let's be honest: some minders are afraid of such oils. They say they are too "liquid", and their oil film is "weak". It is necessary to fill in oils with summer class 40 and higher - for example, SAE 5W ‑ 40 or 10W ‑ 50, mechanics insist. Are the repair aces right?
It would seem, yes. Powerful oil wedge in plain bearings, strong film in the cam-pusher pair (and the contact pressures are good there), reduction of boundary friction in the piston-cylinder pair. All this will reliably protect the engine from wear.
This opinion was fully justified 15–20 years ago. Much has changed today - and above all the motors themselves. The concept and technologies of downsizing, new construction materials, antifriction coatings for piston rings appeared. And most importantly, the requirements for exhaust gas emissions have become much more stringent.