ADNOC ADbase Group III Base Oil — 4 cSt, 6 cSt & 8 cSt
Premium VHVI base oil from ADNOC Refining. Viscosity Index 131–138, sulphur below 3 ppm, Noack as low as 2.5%. Engineered for GF-6, ACEA C3, MB-229 and dexos1 Gen 2 engine oil formulations. Sinolook is the exclusive distributor in China since 2020.
Sinolook is the only authorized ADNOC ADbase distributor in China
ADNOC Refining produces 500,000 metric tons of premium Group III base oil per year at Ruwais, UAE — marketed globally under the ADbase brand. ADNOC selects one exclusive distributor per major region:
Every Chinese lubricant manufacturer sourcing genuine ADNOC ADbase Group III base oil goes through Sinolook — with bonded storage at Yingkou, Nantong and Guangdong for fast delivery anywhere in China.
The premium base stock for modern engine oils
ADbase is ADNOC's flagship Group III base oil — produced through severe hydrocracking and hydro-isomerization of high-paraffinic crude oil at the ADNOC Refining complex in Ruwais, UAE.
With viscosity index 131–138, sulphur below 3 ppm, saturates at 99.8% and Noack volatility as low as 2.5%, ADbase delivers the performance modern OEMs demand for fuel-efficient, emission-compliant engine oils.
Often classified as VHVI (Very High Viscosity Index) base oil, ADbase enables formulators to meet stringent specs like API SP, ILSAC GF-6, GM dexos1 Gen 2, ACEA C3 and MB-229.31 — without resorting to fully synthetic PAO. ADNOC Refining is ISO 9001:2015 certified and signed to the ATIEL Code of Practice.
Ultra-High VI
VI 131–138 — best-in-class viscosity stability across temperatures.
Low Volatility
Noack 2.5–10.9% — meets GF-6 fuel-economy requirements.
OEM-Approved
API SP, ILSAC GF-6, ACEA C3, MB-229.31, dexos1 Gen 2.
Consistent Quality
500,000 MT/year ADNOC production — proven batch-to-batch consistency.
ADbase 4 cSt, 6 cSt & 8 cSt — full quality report data
Typical values from ADNOC's official quality reports. Each shipment is accompanied by an original ADNOC Certificate of Analysis plus third-party SGS inspection report.
| Property | ADbase 4 cSt | ADbase 6 cSt | ADbase 8 cSt | Test Method |
|---|---|---|---|---|
| Appearance | Clear & Bright | Clear & Bright | Clear & Bright | ASTM D4176 |
| KV @ 100°C (mm²/s) | 4.30 | 6.04 | 7.88 | ASTM D445 |
| KV @ 40°C (mm²/s) | 19.4 | 32.1 | 47 | ASTM D445 |
| Viscosity Index | 131 | 138 | 137 | ASTM D2270 |
| Pour Point (°C) | −21 | −18 | −18 | ASTM D5949 |
| Noack Volatility (wt%) | 10.9 | 5.6 | 2.5 | ASTM D5800 |
| CCS @ −30°C (mPa·s) | 1350 | 3400 | 7100 | ASTM D5293 |
| Saybolt Color | +28 | +27 | +25 | ASTM D156 |
| Flash Point (°C) | 230 | 230 | 265 | ASTM D92 |
| Sulphur (mg/kg) | <3.0 | <3.0 | <3.0 | ASTM D2622 |
| Saturates (wt%) | 99.8 | 99.8 | 99.8 | ASTM D7419 |
| Aromatics (wt%) | <0.2 | <0.2 | <0.2 | ASTM D7419 |
| Acid Number (mg KOH/g) | <0.1 | <0.1 | <0.1 | ASTM D664 |
| Density @ 15°C (g/mL) | 0.8266 | 0.8370 | 0.8420 | ASTM D4052 |
Data from ADNOC ADbase Typical Quality Report. ADNOC Refining Base Oil unit is ISO 9001:2015 certified and signed to the ATIEL Code of Practice (Base Stock Quality Assurance guidelines).
Choose the right ADbase grade for your formulation
Each ADbase grade is optimised for specific engine oil viscosity classes. Click "Request quote" for batch-current COA and Asia-Pacific delivery pricing.
The ADNOC hydrocracking & hydroisomerization process
ADbase uses high-paraffinic crude oil as feedstock, going through hydrocracking, pre-distillation, hydro-isomerization and product distillation to deliver consistently high VI and ultra-low sulphur Group III base oil.
ADNOC manufactures base stocks in accordance with the ATIEL Code of Practice (Base Stock Quality Assurance guidelines). ADNOC Refining Base Oil unit is ISO 9001:2015 certified.
Proven batch-to-batch quality
ADNOC's commitment to consistent ADbase quality is verified by year-over-year monitoring of key parameters. Stable VI and low Noack volatility translate directly into predictable performance in your finished lubricant.
ADbase 6 cSt — Viscosity Index Stability
ADbase 6 cSt — Noack Volatility
Chart data from ADNOC ADbase brochure. ADbase has demonstrated consistent VI and Noack performance year over year — directly translating into predictable lubricant formulation results.
Engine oil formulation approvals using ADbase
ADbase has obtained formulation approvals from major OEMs across North America and Europe. The list below reflects approvals already obtained — additional certifications are in progress.
✓ Obtained Approvals
Verified formulation certifications using ADbase as the Group III base stock
North America — PCMO
Europe & HDDEO
Visit the ADNOC official site for the latest formulation approvals. Final OEM approvals depend on the additive package and formulation by the lubricant blender.
Where ADbase Group III delivers
ADbase enables formulators to meet the most demanding modern engine oil specifications — for fuel economy, emission compliance, and OEM approvals — across passenger car and heavy-duty diesel applications.
ADbase vs other Group III brands
How ADNOC ADbase compares to other major Group III base oil brands available in the Asia-Pacific market. Specifications are publicly available data.
| Property (4 cSt grade) | ADNOC ADbase 4 | SK YUBASE 4 | Shell GTL 4 |
|---|---|---|---|
| KV @ 100°C (mm²/s) | 4.30 | 4.24 | 4.34 |
| Viscosity Index | 131 | 128 | 136 |
| Noack (wt%) | 10.9 | 13.5 | 11.2 |
| Pour Point (°C) | −21 | −15 | −18 |
| Sulphur (ppm) | <3 | <3 | <1 |
| Production origin | Ruwais, UAE | Ulsan, S. Korea | Qatar (GTL) |
| China availability | Exclusive · Sinolook | Multiple traders | Limited |
Comparison based on publicly available product data sheets. ADbase offers competitive technical performance with the advantage of exclusive China distribution through Sinolook — eliminating supply chain layers and providing direct ADNOC authentication.
Bonded delivery anywhere in China
ADbase ships from ADNOC Refining in Ruwais directly to Sinolook bonded storage at Yingkou, Nantong and Guangdong — with onward delivery anywhere in China. Asia-Pacific destinations served through Singapore and Malaysia hubs.
Drum (200 L)
80 drums per 20' container
Flexitank (24 MT)
Per 20' container · single-use
ISO Tank (20–22 MT)
Heated, insulated · reusable
Bulk Vessel
1,000+ MT · direct shore-to-shore
Frequently asked questions
What is Group III base oil?
Is Sinolook the official ADNOC distributor in China?
• GCC — ADNOC Distribution
• United States — Penthol
• Europe — Chemlube
• China — Xiamen Sinolook Oil Co., Ltd.
What is the difference between ADbase 4 cSt, 6 cSt and 8 cSt?
• ADbase 4 cSt (VI 131) — for low-vis engine oils 0W-16, 0W-20, 5W-20
• ADbase 6 cSt (VI 138) — for 5W-30, 5W-40, ACEA C3 formulations
• ADbase 8 cSt (VI 137) — for 5W-40, 10W-40, HDDEO with industry-leading 2.5% Noack
All three grades share sulphur <3 ppm, saturates 99.8% and Saybolt color >+25.
What OEM specifications does ADbase support?
• API: SN-Plus, SP
• ILSAC: GF-5, GF-6A, GF-6B
• GM: dexos1 Gen 2, DEXRON-VI ATF
• ACEA: C3-16
• Mercedes-Benz: MB-229.31
• HDDEO: CK-4 / FA-4 (30% or 100% ADbase content)
Additional approvals for ACEA C2/C5, MB-229.51/52, BMW LL04, and VW 504/507 are in progress.
What is the difference between ADbase and SK YUBASE?
Both have comparable technical performance. ADbase offers competitive Asia-Pacific delivery from the Middle East and — uniquely in China — exclusive distribution through Sinolook, eliminating supply chain layers and ensuring direct ADNOC authentication.
How is ADbase quality verified for each shipment?
1. Shore tank inspection at ADNOC Refining loading port (with tank sealing)
2. Pre-discharge re-inspection at Chinese destination port
3. Pipeline cleaning verification
4. Post-discharge SGS report from bonded tank
Original ADNOC Certificate of Analysis is included with every batch, plus third-party SGS Certificate of Quality.
What is the minimum order quantity for ADbase?
Can I become a sub-distributor or formulation partner?
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View Group ISource genuine ADNOC ADbase directly through Sinolook
As the exclusive China distributor of ADbase Group III base oil since 2020, Sinolook offers direct ADNOC authentication, bonded China storage, SGS verification on every shipment, and 24-hour response on technical and commercial inquiries.
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