SN/SM Engine Oil Additives Package

Advanced Protection for Mid-Tier Gasoline Engines

This SN/SM engine oil additives package has been developed to formulate high quality automotive engine oils and multigrade oils. It is a precision-formulated additive package engineered for API SN/SM-grade engine oils, delivering enhanced anti-wear, deposit control, and oxidation stability.

Product Introduction

Balancing performance with cost-effectiveness, these engine oil additives extend oil life while maintaining compatibility with emission systems lacking GPF/DPF. Ideal for vehicles manufactured between 2004–2018 requiring robust protection without SP/GF-6 compliance.

Key Features

Controlled ZDDP reduces friction by 40% in ASTM D4172 tests while protecting catalytic converters from phosphorus poisoning. These engine oil additives provide superior protection for critical engine components.

Synergistic detergent/dispersant system minimizes piston carbon deposits by 60% vs. baseline oils (Sequence IIIG validated).

Inhibits viscosity increase (ΔKV100 ≤10% @ 1,000h ASTM D2272), extending drain intervals to 15,000 km in moderate conditions.

Sulfur content ≤0.4% (wt.) ensures compatibility with conventional three-way catalysts (OBD-II compliant).

30% lower treat cost vs. SP-grade packages, ideal for emerging markets and value-oriented lubricants. High-performance engine oil additives at an economical price point.

Application

Passenger Car Engine Oils: API SN/SM formulations for non-turbo engines (e.g., Toyota ZZ, Honda D-series).

Hybrid Vehicle Ancillary Systems: Idle-stop motor protectors (JASO M364:2023 compliant).

Commercial Fleets: Taxis/delivery vehicles with 100,000–200,000 km mileage.

Emerging Market Lubricants: Cost-sensitive regions with limited SP-grade adoption.

Remanufactured Engines: Post-overhaul break-in protection (≤5,000 km usage).

Recommended Dosage

SN:8.9%

SM:7.8%

Characteristics

Parameter	Specification	Test Method
Flash Point (COC),°C	180	GB/T3536
Kinematic Viscosity (100°C),mm²/s	Report	GB/T265
TBN,mgKOH/g	80	SH/T0251
Calcium,m%	2.45	SH/T0270
Zinc,m%	0.86	SH/T0226
Phosphorus,m%	0.78	SH/T0296
Nitrogen,m%	0.78	SH/T0224
Molybdenum,m%	0.03	Spectrophotometry

Packaging & Storage

Packaging:200 kg steel drum

Storage:The storage, loading and unloading and oil blending of this product shall be carried out in accordance with SH/T0164. The maximum temperature shall not exceed 75°C; if stored for a long time, the maximum temperature shall not exceed 45°C.

Shelf life:36 months (unopened)

12 months (opened, under nitrogen)

Safety:This Engine Oil Additives is non-flammable, non-explosive and non-corrosive. It is the same as general petroleum products in terms of safety, environmental protection and use, and no special protection is required.

Performance Data

50% lower piston deposits vs. SM baseline (Sequence IIIG)

HTHS viscosity stability: 3.5 cP @ 150°C (ASTM D4683)

100% miscibility with Group I-III base oils

Why Choose This Engine Oil Additives?

“The SN/SM additive combination achieves SP-grade anti-wear performance and also brings performance comparable to SP-grade, enabling high mileage fleets to achieve 15,000 km drain intervals without DPF risk 18.”

— Independent Lubricant Laboratory Report, 2024