ROYAL™ Nano Diesel Engine Oil SAE 10W-40 CJ-4 is a semi-synthetic, high-performance diesel engine lubricantdeveloped using premium synthetic base oils and fortified with a high-performance additive package. Engineered specifically for heavy-duty diesel engines operating under extreme conditions, such as those found in Australia's demanding climates, this formulation meets and exceeds API CJ-4 and SM standards.

It is suitable for four-stroke turbocharged and naturally aspirated diesel engines, including modern low-emission US engines. The formulation features excellent dispersant and anti-wear characteristics, delivering extended service life, excellent engine cleanliness, and protection against soot-induced oil thickening and wear, especially in engines equipped with exhaust after-treatment systems.

Designed to maintain optimal viscosity stability, oxidation resistance, and thermal protection, this oil supports both high-mileage fleet operations and workshops requiring reliability under stress.