lubricant oil

Quality grade (CF-4): Compliant with API CF-4 standards, it is specifically designed for naturally aspirated or turbocharged diesel engines produced before 1994. It effectively inhibits high-temperature carbon deposits and reduces wear on critical components such as pistons and crankshafts, meeting the basic lubrication and anti-wear requirements of these older models.
Viscosity grade (15W40): "15W" indicates low-temperature fluidity, ensuring smooth cold starts at -20°C and preventing dry friction damage during cold starts; "40" represents high-temperature viscosity, maintaining a stable oil film at 100°C to prevent high-temperature lubrication failure, suitable for use in most warm regions or during spring and autumn.

Compatible equipment: Mainly used for non-electronic fuel injection diesel engines, such as old heavy-duty trucks, loaders, excavators, tractors, diesel generators, agricultural machinery, etc.
Applicable environment: Suitable for spring, summer and autumn in subtropical and temperate regions, or summer in cold regions. If the ambient temperature is below -20℃, 10W40, 5W40 or other lower viscosity engine oils should be used to ensure low-temperature starting performance.

This product is not suitable for use in diesel engines with electronic fuel injection that meet or exceed the National IV emission standards (such engines require higher-grade oils like CI-4 or CJ-4). Otherwise, it may clog the SCR/DPF after-treatment system and cause equipment failure.