Making semi synthetic engine oil grade SAE 10W-40

SAE 10W-40 Semi-Synthetic Engine Oil is a premium multi-grade lubricant formulated with a carefully balanced blend of Group II and Group III base oils combined with advanced performance additives. Designed to provide outstanding engine protection under a wide range of operating conditions, this semi-synthetic engine oil delivers excellent wear resistance, superior thermal stability, enhanced oxidation control, and long-lasting engine cleanliness.The advanced additive system helps minimize engine wear, reduce sludge and deposit formation, and maintain stable viscosity throughout the service life of the oil. Its excellent low-temperature fluidity ensures rapid lubrication during cold starts, while its high-temperature stability provides a durable lubricating film that protects critical engine components under heavy loads and demanding driving conditions. This formulation is suitable for modern gasoline and light-duty diesel engines, including naturally aspirated, turbocharged, and fuel-injected vehicles. It is fully compatible with engines equipped with catalytic converters and Exhaust Gas Recirculation (EGR) systems, making it an excellent choice for year-round engine protection.

Formula Features:

• SAE 10W-40 multi-grade viscosity.

• Semi-synthetic formulation using Group II and Group III base oils.

• Outstanding wear protection for extended engine life.

• Excellent cold-start performance.

• Superior oxidation and thermal stability.

• High resistance to sludge and deposit formation.

• Excellent soot dispersancy for cleaner engines.

• Stable viscosity throughout the oil service interval.

• Low foaming characteristics for reliable lubrication.

• Compatible with catalytic converters and EGR-equipped engines.

Applications:

• Gasoline engines.

• Light-duty diesel engines.

• Naturally aspirated and turbocharged engines.

• Passenger cars.

• SUVs.

• Light commercial vehicles.

• Fleet and commercial transportation.

• Year-round automotive lubrication.

Recommended Oil Change Intervals:

Passenger Cars – Normal (City & Highway): Recommended Oil Change Interval: 8,000–10,000 km

• Passenger Cars – Severe Service: Recommended Oil Change Interval: 5,000–7,000 km

• Light Trucks & Diesel Vehicles – Normal Use: Recommended Oil Change Interval: 7,000–9,000 km

• Commercial Vehicles & Taxis – Heavy-Duty Stop-and-Go: Recommended Oil Change Interval: 4,000–6,000 km

 

Typical Formula Test Results:

• Kinematic Viscosity @100°C: 13.5–14.8 cSt

• Viscosity Index: >140

• Pour Point: < –30°C

• CCS @ –25°C: Meets SAE 10W Requirements

• Total Base Number (TBN): 8–10 mg KOH/g

• Sulphated Ash: 1.1–1.3 wt%

• Zinc (Zn): Approximately 1200 ppm

The formulation includes complete manufacturing instructions, raw material specifications, formulation percentages, blending procedures, production methods, quality control tests, and practical recommendations for manufacturing a premium SAE 10W-40 Semi-Synthetic Engine Oil using economical and commercially available raw materials. The formulation file is available in English only, in PDF format, and is written in clear, practical technical language for easy implementation.

✓ Complete Formula Full ingredients with exact quantities	✓ Manufacturing Process Step-by-step production method	✓ Quality Control Testing & specifications
✓ Production Cost Detailed cost breakdown	✓ Packaging Guide Storage & handling tips	✓ Technical Tips Expert notes & troubleshooting

Format	PDF
Pages	15
Language	English
Industry	Lubricants and grease
Delivery	Within 24 hours by email
Last Updated	May 2026

★★★★★ Excellent formula! Very detailed and easy to understand. Worked perfectly for our production. Ahmed R. Kuwait

★★★★★ Highly recommended Complete guide with all technical details. Saved us weeks of testing. Kamel Turkey

★★★★★ Great value Professional formula at a very reasonable price, High quality. George M Germany