SAE 30 SAE 40 SAE50

As a professional factory, we specialize in manufacturing high-quality monograde diesel engine oils, with core viscosity grades of SAE 30, SAE 40, and SAE 50—tailored to the lubrication needs of diesel engines in specific temperature and load conditions.

All our monograde diesel engine oils deliver reliable anti-wear, anti-oxidation, and deposit control performance, protecting engine components (pistons, crankshafts, bearings) from wear and extending service life. The key difference lies in viscosity, matching different operating temperatures:

– SAE 30: Lower viscosity, ideal for diesel engines operating in moderate to warm temperatures (typically 10℃ to 35℃). Suitable for light to medium-load engines in small agricultural machinery, generators, or vintage vehicles.

– SAE 40: Medium viscosity, the most versatile monograde option for warm to hot temperatures (20℃ to 45℃). Widely used in medium-load diesel engines of trucks, construction equipment, and industrial generators under continuous operation.

– SAE 50: Higher viscosity, designed for hot-temperature or heavy-load conditions (30℃ to 50℃). Perfect for heavy-duty diesel engines in mining machinery, large trucks, or marine equipment that endure high pressure and high temperatures.