How to make diesel engine lubricant grade CF

API CF is a diesel engine oil performance classification established by the American Petroleum Institute (API) for lubricants intended for older-generation diesel engines. Compared to the earlier API CD category, API CF provides improved protection against soot formation, piston deposits, oxidation, and acid buildup, making it suitable for indirect-injection diesel engines and selected direct-injection engines operating under moderate to severe service conditions. This formulation is designed to produce a high-quality SAE 15W-40 API CF Diesel Engine Oil, offering excellent engine cleanliness, reliable wear protection, improved oxidation resistance, and enhanced soot dispersancy. The carefully balanced additive package helps extend engine life while maintaining stable lubrication performance under demanding operating conditions. API CF engine oil is widely used in light and medium-duty diesel trucks, agricultural equipment, construction machinery, industrial generators, and older diesel-powered vehicles that require API CF performance specifications.

Applications:

• Light and medium-duty diesel trucks

• Agricultural machinery and tractors

• Construction and earthmoving equipment

• Diesel generators

• Industrial diesel engines

• Commercial fleet vehicles

• Older naturally aspirated and turbocharged diesel engines

• Equipment requiring API CF / SAE 15W-40 engine oil

Formula Features:

• Meets API CF performance requirements.

• SAE 15W-40 multigrade viscosity.

• Superior soot dispersancy to reduce sludge formation.

• Improved piston cleanliness.

• Excellent oxidation stability for extended oil life.

• Higher Total Base Number (TBN) for improved acid neutralization.

• Reliable anti-wear and anti-corrosion protection.

• Excellent thermal stability under heavy-duty operation.

• Compatible with commercially available additive packages.

• Manufactured using cost-effective and readily available raw materials.

Typical Formula Test Results:

• Appearance: Bright & Clear

• Density @ 15°C (ASTM D4052): ~880 kg/m³

• Kinematic Viscosity @ 40°C (ASTM D445): 130–140 cSt

• Kinematic Viscosity @ 100°C (ASTM D445): 14–15 cSt

• Viscosity Index (ASTM D2270): 100–105

• Total Base Number (TBN) (ASTM D2896): 7–8 mg KOH/g

• Pour Point (ASTM D97): –18 to –21°C

• Flash Point (COC) (ASTM D92): ~240°C

• Sulphated Ash (ASTM D874): 1.0–1.1 wt%

• Foam Sequence I, II & III (ASTM D892): Pass

• Copper Strip Corrosion (ASTM D130): 1a

• Water Content (ASTM D6304): <200 ppm

• Acid Number (AN) (ASTM D664): ~0.5 mg KOH/g

• ASTM Color (ASTM D1500): ~3.0 (Amber Brown)

The formulation includes complete manufacturing instructions, raw material specifications, formulation percentages, blending procedures, production guidelines, quality control tests, and practical recommendations for manufacturing a high-quality API CF SAE 15W-40 Diesel Engine Oil suitable for commercial production. 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	20
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. Ave a Spain

★★★★★ Highly recommended Complete guide with all technical details. Saved us weeks of testing. Ahmet k. KSA

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