T161 High Molecular Weight Polyisobutylene Succinimide Dispersants In Engine Oil
Ultra-Performance Ashless Dispersant for Severe Engine Conditions
T161 is made of highly active polyisobutylene and is produced by thermal addition process. It has high temperature mud dispersibility and can inhibit the formation of carbon deposits and paint films on piston oil pistons. Its high temperature dispersibility is comparable to traditional T154 and T155 products.
Product Introduction
T161 is a high molecular weight (Mn >2300) polyisobutylene succinimide ashless dispersant engineered to combat sludge, varnish, and carbon deposits in extreme-temperature engines. Leveraging advanced PIB polymerization technology, it delivers superior soot handling and deposit control for extended drain intervals. Key applications include heavy-duty diesel oils, hybrid/electric drivetrains, and biofuel-exposed lubricants.
- Molecular Weight Advantage
PIB backbone (Mn 2300–2500) provides 40% higher soot dispersion vs. standard succinimides (per ASTM D7218).
- Thermal Endurance
Maintains dispersancy integrity at 280°C+ (reduces turbo varnish by 60% in Mack T-11 tests).
- Boron Synergy
Boron content (≥0.4% wt.) enhances anti-wear performance and oxidation stability (ASTM D2893).
- Low-SAPS Compliance
Zero phosphorus, sulfur <0.2%, sulfated ash <0.5% for Euro VII/China VI compatibility.
- Biofuel Resistance
Prevents sludge formation in B100 biodiesel and E85 ethanol blends (ASTM D7548 validated).
Application
Heavy-Duty Diesel Oils: API CK-4/FA-4 (controls soot-induced viscosity increase).
Hybrid Drivetrain Fluids: E-motor cooling oils with 100,000+ km drain capability.
Marine Engines: MAN ES 40-60BN cylinder oils (reduces scavenge port deposits).
Gas Engine Lubricants: CNG/LNG formulations (compatible with NOx aftertreatment).
100% Bio-Lubricants: ISO 15380 HEES hydraulic fluids.
Reference Dosage
Recommended Dosage: 1–10% (adjust based on base oil and performance targets).
Characteristics
Parameter | Specification | Test Method |
Appearance | Dark amber viscous liquid | Visual |
Kinematic Viscosity (100°C) | 300–500 mm²/s | GB/T265 |
Flash Point (COC) | ≥180°C | GB/T3536 |
Total Base Number (TBN) | 15–30 mgKOH/g | SH/T0251 |
Nitrogen Content | 1.0–1.2% (wt.) | SH/T0224 |
Moisture | ≤0.08% (wt.) | GB/T260 |
Packaging & Storage
Packaging: 200L metal drums (net weight: 170–180 kg/drum) or 1,000 kg IBC containers.
Storage: Temperature ≤45°C, avoid direct sunlight.
Shelf life: 24 months in sealed containers.
Handling: Use standard PPE; rinse with detergent if skin contact occurs.
Custom Solutions & Technical Support
Low-volatility variants (Noack ≤8% @250°C)
Ultra-high MW grades (Mn 3000+)
“Field-proven: 80,000 km oil drain intervals in Euro VI trucks with ≤3.0% soot-induced viscosity rise”
Why Choose T161?
“The first high-MW dispersant achieving >65% deposit reduction in GM Sequence IIIH oxidation tests while maintaining elastomer compatibility (ASTM D471).”
— Lubricant Technology Center, 2024
Product features: chlorine-free, high temperature, dispersibility, oil solubility, solubilization, and high temperature stability.
