Chiar daca uleiul este pur sintetic si polimerii din el sunt stabili o perioada mai lunga de folosire el este contaminat cu benzina/motorina si reziduri de la ardere. In timp el se subtie si se inegreste, astfel isi pierde capacitatile de ungere si apar depuneri. Alta treaba e filtrul care se desface efectiv, multi au gasit bucati de carton pe circuit si cartusul filtrant ciuruit.
Eu prefer schimb la 7-9,000km cind se inchide la culoare si pun totusi Mobil1 care e de calitate.
A se citi
http://www.carbibles.com/engineoil_bible.html
Pina si in TIS scrie clar :
As oil consumption is affected by technical factors, the conclusion is reached that the engine does not consume oil in special operating conditions that lead to oil dilution.
During conditions such as frequent cold starts and driving before the engine reaches operating temperature, it is only the oil flowing back to the oil pan that carries away scalding fuel components and precipitates. This "dilutes" the oil and leads to the erroneous assumption that the engine consumes no oil.
Such diluted oil loses its ability to lubricate and could cause engine damage if the prescribed oil change intervals are not observed.
Driving in predominately urban traffic and frequently running a cold engine at rpms above idle speed are the main causes of oil dilution.
Cea mai mare contaminare a uleiului este la diesel, la fiecare pornire injectorul scuipa dar detonatia (pornirea) este dupa citeva secunde sau la mai multe chei. De asta un motor diesel (uleiul contine motorina) este mai curat la interior decit unul pe benzina chiar daca uleiul e negru mai tot timpul.
Nu va luati dupa olandez ca e un idiot.
Dark mode
.
Cea mai mare comunitate Opel