aš tai ir nusprendžiau nežaisti su mūsų šaltom žiemom, ir kad nebūtų fokusų jau boxeris maudos ELF 5w40 ala sintetikoj.
gal tik kas techniškai apšvies mane, pas mus esančios 5w40 Elf, Mobil ir t.t. alyvos skaitosi tikroji sintetika Polyalphaolefins (PAO's) pagrindu, ar tai iščiustytas mineralinis apdirbtas hydrocracking metodu, kaip ištrauka iš `Motor oil bible`:
Petroleum lubricant basestocks can be put through a super-extreme refining process called
hydrocracking. In some cases, as in the case of one particular name-brand "synthetic" oil, these highly
refined petroleum basestocks can actually be termed and sold as "synthetic". It is completely legal for
lubricants manufacturers to label these oils as "synthetic".These are extremely high performance petroleum basestocks, but they are not truly synthetic the way
that most people understand the term and will not necessarily perform to the same level as a premium
synthetic oil.
Hydrocracking involves changing the actual structure of many of the lubricant basestock molecules by
breaking and fragmenting different molecular structures into far more stable ones. This results in a
basestock which has far better thermal and oxidative stability as well as a better ability to maintain
proper viscosity through a wide temperature range - when compared to a typical petroleum basestock.
Although contaminants are still present, and these are still petroleum basestocks, contamination is
minimal and performance characteristics are high. This process also can turn a wider range of crude oil
stock into well-performing petroleum lubricant basestocks.
