Himal 15W-40 CI-4 is a premium heavy-duty diesel engine lubricant formulated by Himal Lubricants for rugged performance and reliable protection in commercial vehicles, construction machinery, generators, and mixed-fleet diesel engines. Designed to meet the demanding needs of modern diesel engines, it provides excellent soot control, wear protection, and thermal stability under high-stress conditions.

Key Features & Benefits:

API CI-4 Specification: Conforms to API CI-4 standard, which ensures superior performance in 4-stroke high-speed diesel engines, including those with Exhaust Gas Recirculation (EGR).
Viscosity Grade 15W-40: Offers optimal flow characteristics — “15W” ensures sufficient fluidity in cold starts, while “40” maintains a strong lubricating film at high operating temperatures.
Soot & Deposit Control: Formulated with advanced detergents and dispersants to manage soot buildup and minimize piston-ring deposits, preserving engine cleanliness and extending oil life.
Excellent Shear Stability: Maintains “stay-in-grade” viscosity under high shear, reducing thinning under stress and ensuring consistent protection.
Oxidation & Thermal Stability: High resistance to oxidation at elevated temperatures helps prolong oil life and reduce sludge formation.
Wear Protection: Robust anti-wear additives protect critical engine parts like bearings, cam lobes, and piston rings from wear, even under heavy loads.
Corrosion & Rust Prevention: Inhibitors in the formulation help guard metal surfaces against moisture and corrosive combustion by-products.
Suitable Applications: Ideal for a wide range of heavy-duty diesel engines — trucks, buses, construction machinery, agricultural equipment, stationery generators, and mixed fleets.
Extended Drain Intervals: Thanks to its balanced formulation, it supports extended oil change intervals when used under recommended service conditions.

Usage Recommendations:

Check the engine manufacturer’s manual to ensure API CI-4 (or older) is acceptable.
Ideal for both on-road and off-road diesel engines.
Replace oil filter during every oil change to maximize protection.
Monitor oil level and condition regularly, especially in severe duty or high-stress applications.

Storage & Handling:

Store in clean, sealed containers in a dry environment.
Avoid exposure to water or extreme heat.
Dispose of used oil at an authorized recycling / collection facility to be environmentally responsible.

Himal 15W-40 API CI-4 5 Liter Can