CNG/LNG/CF Low Ash Natural Gas Engine Oil Additive

CNG/LNG/CF Low Ash Natural Gas Engine Oil Additive Packages

Low Ash Natural Gas Engine Oil Additive Packages

It effectively controls the formation of oil deposits and meets the requirements of oil anti-wear, anti-oxidation and low ash content. It is suitable for modulating high-pressure output mobile compressed natural gas (CNG) engine lubricating oil.

Product Introduction

This premium engine oil additive is a specialized low-ash additive package engineered for natural gas (NG) and biogas engine oils, compliant with API CK-4/FA-4 and OEM specifications (Caterpillar 35268, Cummins CES 20092). It addresses the unique challenges of gas combustion—high temperatures, nitric acid corrosion, and spark plug fouling—while minimizing ash content to protect after-treatment systems (DPF, SCR). Ideal for stationary power gensets, LNG transport, and dual-fuel marine engines operating under ISO 11009 standards.

Key Features

Sulfated Ash ≤6.5% – Prevents spark plug fouling and exhaust valve recession, extending maintenance intervals by 2–3× compared to conventional oils.

Optimized TBN (≥40 mgKOH/g) – Neutralizes nitric acids from lean-burn combustion without ash accumulation in SCR/DPF systems. This advanced engine oil additive ensures long-term system protection.

Anti-Wear Synergy: Molybdenum dialkyldithiocarbamate (MoDTC) and ashless anti-wear agents reduce valve seat wear by >45% under >250°C peak temperatures.

Piston Cleanliness: Calcium sulfonate detergents inhibit carbon deposits ≤300°C, maintaining ring flexibility and preventing blow-by gas leakage.

Hindered Phenol + Ashless Antioxidants – Control viscosity growth (Δkv100 ≤1.5 mm²/s after 500h) in continuous high-load operation.

Hydrolytic Stability – Resists moisture-induced degradation from biogas contaminants (e.g., H₂S, CO₂).

Near-zero phosphorus (<0.03%) and sulfur (<0.2%) – Ensures long-term SCR catalyst efficiency and compliance with EPA Tier 4/IMO III. This engine oil additive is designed for modern emission standards.

Application

This specialized engine oil additive delivers exceptional performance in:

Target Engines:

Lean-burn NG gensets (GE Jenbacher, Wärtsilä).

Dual-fuel marine engines (MAN ME-GI, WinGD X-DF).

Biogas engines (Caterpillar G3500, Deutz TCG 2020).

Recommended Dosage

Dosage: 7.0–15.0% in Group II/III base oils.

*performance level*	*Dosage (weight %)*
CNG	10.5
LNG	10.5
CF	10.5

Characteristics

*Item*	Typical value	Test method
Flash point (COC) °C	≥170	GB/T3536
Kinematic viscosity (100 ℃), mm2/s	Report	GB/T265
Calcium, m %	≥1.35	SH/T0297
Zinc,m%	≥0.8	SH/T0226
Nitrogen, m %	0.85	SH/T0224
Sulfated ash,%(m/m)	≤6.5	SH/T2433
TBN, mgKOH/g	≥40	SH/T0251

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 product 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.