If you're sourcing Group III base oil in Asia-Pacific, two names come up repeatedly: ADNOC ADbase and SK YUBASE. Both are premium Group III base oils used in modern engine oil formulations worldwide. So how do they compare — and which should you choose?
This is an objective, technical comparison. The short answer: both are excellent products with comparable performance. The practical differences come down to origin, availability and commercial terms. Let's look at the details.
Background: two leading Group III producers
ADbase is the Group III base oil brand of ADNOC (Abu Dhabi National Oil Company), produced at its refining complex in Ruwais, UAE. ADNOC manufactures around 500,000 metric tons of ADbase per year, using high-paraffinic crude oil as feedstock and severe hydrocracking + hydroisomerization.
YUBASE is the Group III base oil brand of SK Enmove (formerly SK Lubricants), part of South Korea's SK Group, produced in Ulsan, South Korea. YUBASE was one of the pioneering Group III base oils and is well established globally.
Both ADbase and YUBASE are premium, OEM-approved Group III base oils with comparable technical performance. Neither is fundamentally "better" — the right choice depends on your market, required grades, delivery and commercial terms.
Technical specification comparison
Here's how the two compare at the common 4 cSt grade, using publicly available product data:
| Property (4 cSt) | ADNOC ADbase 4 | SK YUBASE 4 |
|---|---|---|
| KV @ 100°C (mm²/s) | 4.30 | 4.24 |
| Viscosity Index | 131 | 128 |
| Noack volatility (%) | 10.9 | 13.5 |
| Pour Point (°C) | −21 | −15 |
| Sulphur (ppm) | <3 | <3 |
| Saturates (%) | 99.8 | >99 |
| Production origin | Ruwais, UAE | Ulsan, S. Korea |
As you can see, the specifications are very close. At the 4 cSt grade, ADbase shows a slightly higher viscosity index and lower Noack volatility, but both products comfortably meet Group III requirements. In practice, the differences at this level rarely change formulation outcomes — both are formulator-friendly premium base stocks.
OEM approvals
Both ADbase and YUBASE carry extensive OEM formulation approvals, which is what matters most for finished engine oil blenders. ADbase has obtained approvals across:
- API SN-Plus, SP
- ILSAC GF-5, GF-6A, GF-6B
- GM dexos1 Gen 2
- ACEA C3-16
- Mercedes-Benz MB-229.31
- API CK-4 / FA-4 (HDDEO)
YUBASE holds a similarly broad approval portfolio. For most blenders, both products will satisfy the target specification — so OEM approvals are rarely the deciding factor between them.
Practical differences: origin & availability
Since the technical performance is comparable, the real decision factors are practical:
- Origin & logistics. ADbase ships from the UAE; YUBASE from South Korea. For buyers in China and Asia-Pacific, both are accessible, but lead times and freight differ by destination.
- Availability in China. ADbase is distributed exclusively in China by Sinolook, which means a single, authenticated supply channel with bonded storage. YUBASE is available through multiple traders.
- Grade range. Both offer the common 4, 6 and 8 cSt grades suitable for the full range of modern engine oils.
- Commercial terms. Pricing fluctuates with crude, freight and regional supply-demand. It's worth comparing live quotes for your specific grade and volume.
The verdict
ADbase and YUBASE are both excellent Group III base oils. If you already use one successfully, there's rarely a technical reason to switch. If you're choosing fresh:
- For buyers in China who value a single authenticated supply channel with bonded storage and original ADNOC documentation, ADbase via Sinolook is a strong, straightforward option.
- For buyers with established Korean supply routes or existing YUBASE qualification, YUBASE remains a reliable choice.
The best approach: request current quotes and samples for both, run your formulation validation, and decide based on availability, delivered cost and your supply-chain preferences.
Source ADNOC ADbase Group III in China
Sinolook is the exclusive China distributor of ADNOC ADbase since 2020 — offering ADbase 4, 6 and 8 cSt with bonded storage, original ADNOC COA and SGS verification on every shipment.
Explore ADbase Group IIIFrequently asked questions
What is the difference between ADbase and YUBASE?
Both are Group III base oils with similar viscosity grades and performance. ADbase is produced by ADNOC Refining in Ruwais, UAE; YUBASE by SK Enmove in Ulsan, South Korea. Both have comparable VI, low sulphur and broad OEM approvals. The main differences are origin, regional availability and commercial terms — not fundamental quality.
Is ADbase as good as YUBASE?
Yes — both are premium Group III base oils with comparable performance. ADbase offers VI 131–138, sulphur below 3 ppm and Noack as low as 2.5% at the 8 cSt grade. Both hold major OEM approvals. The choice usually comes down to availability, delivery and price rather than quality.
Who makes ADbase base oil?
ADbase is produced by ADNOC Refining, part of the Abu Dhabi National Oil Company, at its base oil complex in Ruwais, UAE — around 500,000 metric tons per year. In China, ADbase is distributed exclusively by Sinolook since 2020.
Where can I buy ADbase Group III base oil in China?
Sinolook is the exclusive distributor of ADNOC ADbase in China since 2020 — supplying ADbase 4, 6 and 8 cSt with bonded storage for fast delivery, original ADNOC Certificate of Analysis and SGS verification on every shipment.
Whether you choose ADbase or YUBASE, you're getting a premium Group III base oil. For buyers in China seeking a clean, authenticated supply channel, ADbase through Sinolook offers a compelling combination of quality, documentation and logistics.