Three hydrocracked grades with over 99% saturates and ultra-low sulphur. The modern base stock for engine oils, ATF and premium industrial lubricants. Sourced through Sinolook's multi-supplier network anchored by major Chinese refineries.
Group II base oil is hydrocracked paraffinic base oil — the workhorse base stock that replaced Group I in modern engine oil and ATF formulations.
Through severe hydrocracking and catalytic dewaxing, Group II achieves over 99% saturates and sulphur below 30 ppm — dramatically improving oxidation stability, volatility (Noack) and colour compared to solvent-refined Group I. The result: longer drain intervals, better OEM approvals and reliable performance in API SN, SP, ACEA C2/C3 and dexos formulations.
Sinolook offers a complete Group II portfolio: 100N and 150N for light to medium viscosity, plus 500N for heavy-grade applications — all sourced through our multi-supplier network anchored by major Chinese state-owned refineries including Sinopec, CNOOC and Sinochem.
Over 99% saturates — exceptional oxidation stability and longer drain intervals.
Sulphur below 3 ppm in 100N/150N — compatible with modern after-treatment systems.
Multiple Chinese state-owned refinery sources (Sinopec, CNOOC, Sinochem) — supply security & flexibility.
Suitable for API SN/SP, ACEA C2/C3, GM dexos1 and MB-229 engine oil formulations.
Sinolook builds Group II supply chains differently from single-source distributors. By integrating multiple producers — anchored by major Chinese state-owned refineries with occasional international sourcing — we deliver consistent product availability, competitive pricing, and the flexibility to match specific batch requirements for each customer.
China Petroleum & Chemical Corporation
Asia's largest integrated energy & chemical company. Multiple hydrocracking complexes producing Group II 100N / 150N / 500N to consistent quality standards.
China National Offshore Oil Corporation
Major Chinese state-owned producer with modern hydrocracking facilities. Reliable Group II 500N supply with stable batch-to-batch consistency.
China National Chemical Corporation
Diversified state-owned chemicals group. Strategic Group II base oil sourcing for premium lubricant blending applications.
Asia-Pacific spot market sourcing
Selective supplementary sourcing from regional producers (including Formosa Plastics, SK and others) when batch specifications or commercial terms benefit our customers.
Typical values from recent production batches. All specifications conform to ASTM standards with SGS verification on every shipment. Batch-specific COA available with each order.
| Property | 100N | 150N | 500N | Test Method |
|---|---|---|---|---|
| KV @ 40°C (mm²/s) | 16.9 | 35.99 | 87.01 | ASTM D445 |
| KV @ 100°C (mm²/s) | 3.815 | 6.096 | 10.25 | ASTM D445 |
| Viscosity Index | 117 | 116 | 98 | ASTM D2270 |
| Density @ 15–20°C (g/cm³) | 0.8347 | 0.8419 | 0.8729 | ASTM D4052 |
| Flash Point (°C) | 212 | 240 | 250 | ASTM D92 |
| Pour Point (°C) | −25 | −12 | −24 | ASTM D97 / D5950 |
| Saybolt Color | >+30 | >+30 | +30 | ASTM D156 |
| Saturates (wt%) | 97.1 | >99.9 | 99.93 | ASTM D7419 |
| Sulphur | 1.1 ppm | 0.36 ppm | <3 ppm | ASTM D5453 / D2622 |
| Noack Volatility (wt%) | — | 6.7 | 4.8 | ASTM D5800 |
| Oxidation Stability RPVOT (min) | 268 | 336 | — | ASTM D2272 |
Values are typical and indicative. Refer to the latest product TDS and shipment-specific COA/SGS for batch results.
Each grade is optimised for a specific viscosity window in modern lubricant blending. Click "Request quote" to receive batch-current COA, SGS report and pricing.
Group II is produced through severe catalytic hydrocracking — a high-pressure hydrogen-treatment process that saturates aromatic compounds and removes sulphur, producing premium base oil that solvent refining cannot match.
If you currently formulate with Group I (SN150, SN500, BS150), upgrading to Group II 150N or 500N typically delivers longer drain intervals, better OEM compliance, and lower volatility — at a competitive cost premium.
Need Group I instead? View our Group I SN150/SN500/BS150 range →
Group II's combination of high saturates, low sulphur and excellent oxidation stability makes it the default base stock for modern engine oils, automatic transmission fluids, premium industrial lubricants and heavy-duty diesel oils.
Bonded storage at Yingkou, Nantong and Guangdong (China), plus partner facilities in Singapore, Malaysia and Asia-Pacific hubs. 500N ships from multiple anchor refinery locations through our global bonded storage network.
80 drums per 20' container · sealed steel
Per 20' container · single-use liner
Heated, insulated · reusable
1,000+ MT · direct shore-to-shore
Tell us the grade(s), volume and destination port — we'll respond within 24 hours with batch-current COA, SGS report, pricing and logistics options.
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