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Catalogue

Viskozita podľa SAE

Viskozita podľa SAE je systém klasifikácie, ktorý určuje, aký je motorový olej „tekutý“ alebo „hustý“ pri rôznych teplotách. Označenie, ako je napríklad 5W-30, sa skladá z dvoch častí. Prvé číslo nasledované písmenom „W“, ktoré znamená „Winter“ (zima), opisuje správanie oleja pri nízkych teplotách. Nižšie číslo, napríklad 0W alebo 5W, značí, že olej zostáva tekutejší aj v mraze a dokáže tak rýchlejšie premazať všetky časti motora hneď po štarte, čím znižuje jeho opotrebenie. Druhé číslo, v tomto prípade 30, udáva viskozitu oleja pri prevádzkovej teplote motora, zvyčajne okolo 100 °C. Toto číslo určuje, ako dobre si olej udrží svoju hustotu a ochranný mazací film, keď je motor plne zahriaty a zaťažený. Olej s týmto dvojdielnym označením sa nazýva viacstupňový, pretože sa jeho vlastnosti menia s teplotou. Správnu viskozitu pre konkrétny motor vždy predpisuje výrobca vozidla.

Ponuka motorových olejov

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