5W-40

5W‑40 is a viscosity classification according to SAE J300, where “5W” denotes the cold viscosity that provides quick start‑up and proper lubrication at temperatures down to –30 °C, and “40” denotes the oil density at 100 °C, guaranteeing stable engine protection under high operating temperatures. This grade is optimal for gasoline and diesel engines of medium and large displacement, including high‑output passenger‑car power units, trucks and off‑road vehicles, as well as diesel blocks equipped with selective catalytic reduction (SCR) systems and particulate filters (DPF). 5W‑40 oils provide sufficient oxidation resistance, viscosity retention and wear protection, which is important under high loads and long distances. They are also compatible with catalysts and after‑treatment systems because they do not contain excessive SAPS, allowing safe use in modern engines with DPF. On Xenum.ua you will find six premium products, including hybrid synthetic and ester oils that meet this specification and ensure the longevity of your engine.