WINIRON SUPER 10W-40 SM/CF (Gasoline/CNG) Motor Oil — 4 L

WINIRON SUPER SAE 10W-40 API SM/CF is a fully synthetic (Fully Synthetic) motor oil intended for gasoline engines and engines operating on compressed natural gas (Gasoline & CNG Motor Oil). It is formulated with Korean quality standards (Korean Quality and Technology) and Anti-Wear Technology.

According to the packaging labels, the product features an all-season SAE 10W-40 viscosity grade and meets the API SM/CF specification. The API SM standard (introduced for engines from 2004) provides reliable protection against oxidation, premature wear, and deposit formation at high and low temperatures. The 10W-40 viscosity, combined with a fully synthetic base, guarantees stable oil pressure and excellent lubricating properties even under prolonged loads.

Exact physicochemical properties, manufacturer details, and official OEM approvals require confirmation via the product's Technical Data Sheet (TDS).

Package volume — 4 liters.

Recommended for use in gasoline engines of passenger cars and light commercial vehicles, as well as vehicles converted to run on methane (CNG) or propane (LPG), where the manufacturer permits the use of a synthetic motor oil with SAE 10W-40 viscosity and API SM (or earlier SL, SJ) specification.

An excellent choice for mixed fleets and higher-mileage engines that need a robust oil film. Not recommended for use in modern diesel engines equipped with Diesel Particulate Filters (DPF).