Description
Royal Purple Duralec Super Diesel 15W-40 CK-4 Motor Oil is a high-performance synthetic engine oil designed specifically for diesel engines equipped with emissions control systems such as DPFs, catalytic converters, EGR, and SCR injection systems. This advanced formulation ensures optimal engine protection while complying with emissions standards for North American and European markets. The oil’s robust properties help extend engine life, improve fuel economy, and maintain engine cleanliness under demanding conditions. Its superior resistance to high-temperature breakdown safeguards critical engine components during prolonged use, while its excellent low-temperature pumpability minimizes cold-start wear, ensuring reliable engine performance in varying climates.
This API-licensed CK-4 motor oil offers superior corrosion protection, reduces harmful exhaust emissions, and provides greater wear protection. It is specially formulated to keep engines clean and promote longer drain intervals, contributing to lower maintenance costs. Designed to be gentle on seals, Royal Purple Duralec Super Diesel 15W-40 is suitable for engines requiring emissions-compliant oils with ultra-low sulfur diesel fuels. This product is essential for commercial fleets, heavy-duty trucks, and diesel-powered equipment seeking reliable, high-quality engine oil that meets modern emissions standards and engine demands.
Note that this product is air freight prohibited and not CARB approved, but it offers exceptional performance and protection for diesel engines operating under the latest emissions regulations.
Features:
- API-licensed CK-4 diesel motor oil suitable for modern emissions systems
- Offers superior corrosion and wear protection for diesel engines
- Reduces exhaust emissions to meet environmental standards
- Extends engine component life and drain intervals
- Enhances fuel economy and engine cleanliness
- Maintains excellent low-temperature pumpability for cold starts
- Will not harm engine seals and is compatible with ultra-low sulfur diesel fuels



















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