Base Oil & TDAE Supply for Southeast Asia: The Hormuz Disruption Has Exposed a Structural Crisis

When the Strait of Hormuz tightens, the first instinct of every market commentator is to watch diesel and petrol prices. What gets less attention — and arguably matters more for industrial continuity — is lube base oil. Without base stock, no lubricant blender produces engine oil, gear oil, hydraulic fluid or marine cylinder oil. Without TDAE, no tyre plant produces a finished compound.

Vietnam, the Philippines and Thailand collectively import the majority of their crude oil through Middle East corridors. The Hormuz disruption creates a double exposure: it constrains crude feedstock for regional refineries, and it disrupts the primary shipping corridor through which finished base oil reaches Southeast Asia.

1. Vietnam — A Permanent Structural Base Oil Deficit

Vietnam imports approximately 88% of its crude oil from the Middle East. That figure alone is enough to make any procurement director nervous. But the more important number is one that rarely appears in market reports: 0. Zero litres of lube base oil have ever been produced by either of Vietnam's two refineries.

Both Dung Quat (Binh Son Refining and Petrochemical) and Nghi Son (Nghi Son Refinery and Petrochemical) are configured for fuels only — gasoline, diesel, jet, LPG and a limited petrochemical slate. Neither has a vacuum distillation unit and solvent extraction or hydrocracker configuration capable of producing API Group I, II or III base stock.

Vietnam's base oil import dependence is therefore not a temporary crisis response — it is a permanent structural condition, and the Hormuz disruption has now fully exposed it. Strategic fuel reserves stand at 26 days as of April 2026, following an emergency increase ordered by the Ministry of Industry and Trade. There is no equivalent strategic reserve for base oil — every drop is sourced cargo by cargo from international suppliers.

"For Vietnamese lubricant blenders, base oil is not a commodity that can be substituted, deferred or rationed. If the cargo does not arrive, the blending plant stops."

2. The Philippines — One-Year National Energy Emergency

The Philippines declared a one-year national energy emergency in March 2026. With approximately 95% crude dependence on the Middle East and strategic petroleum reserves of only 14 to 30 days, the country has virtually no buffer. Domestic refining capacity covers only a fraction of total petroleum product demand.

For base oil, the situation is more severe. Philippine lubricant blenders rely almost entirely on imported Group I, Group II and Group III base stock, plus imported finished lubricant top-ups during shortage windows. Industrial buyers — power generation, mining, marine and the BPO data-centre cooling market — are increasingly seeking direct supply relationships with international principal traders to avoid the volatility of distributor-led pricing.

3. Thailand — Export Suspension and Group III / TDAE Tightness

Thailand suspended all petroleum product exports in March 2026 to protect domestic reserves, with the Ministry of Energy confirming that over 50% of crude imports transit the Strait of Hormuz. Thai Lube Base (a joint venture between Thai Oil and JX Nippon) produces some domestic base oil, but volumes are insufficient to cover national demand — particularly for Group III grades and TDAE used in the tyre and rubber sector.

Thailand is the largest natural rubber processor in the world. The country's tyre and technical-rubber compounders rely on a steady stream of Treated Distillate Aromatic Extract (TDAE) as a non-carcinogenic process oil compliant with EU REACH restrictions on PAH content. Any disruption to TDAE supply directly affects export-grade rubber compound production.

4. Why Base Oil Is Different from Diesel

Most energy-disruption coverage focuses on transport fuels because the demand signal is visible at the petrol pump. Base oil is invisible to the public but indispensable to industry:

• Few qualified producers — Group II and Group III base stock requires hydroprocessing technology concentrated in a small number of Middle East, Korean and US refineries.
• Long lead times — typical cargo cycle from Middle East producers to Southeast Asian blending plants is 18–28 days, with limited spot replacement options once a slot is missed.
• Specification rigidity — viscosity index, sulphur, saturates and noack volatility requirements mean Group II cannot be substituted with Group I in a finished engine oil formulation without re-approval testing.
• Storage constraints — base oil terminals in Southeast Asia operate at high utilisation and cannot absorb large strategic stockholdings the way clean fuel terminals can.

5. Base Oil Groups — A Buyer's Quick Reference

6. What Buyers in Vietnam, the Philippines and Thailand Should Do Now

• Diversify sourcing geography — do not rely on a single Middle East corridor. Build relationships with traders that can pivot to alternative producing regions when corridor risk spikes.
• Pre-qualify back-up suppliers — completing KYC, technical specification approval and logistics paperwork in advance turns a 30-day procurement cycle into a 7-day one when needed.
• Lock formulation flexibility — where finished lubricant approvals allow, qualify multiple base stock sources to avoid single-source dependence.
• Increase working stock — even a 15-day operational buffer at the blending plant materially reduces stop-line risk during a Hormuz disruption window.
• Engage principal traders, not intermediaries — during disruption, allocation flows through balance-sheet counterparties, not brokers.

7. How Sanyang Petroleum Supplies the Region

Sanyang Petroleum, a downstream energy company under Canven Group, is a Malaysia-domiciled principal trader supplying Group I, Group II and Group III base oil and TDAE rubber process oil to lubricant blenders, rubber compounders and industrial buyers across Vietnam, the Philippines, Thailand, Indonesia and the wider Southeast Asia region.

Cargo sizes range from flexitank parcels (20–24 MT) for specialty and rubber buyers, through ISO-tank and break-bulk consignments, to coaster and MR-class cargoes for terminal-receiving blending plants. Trade terms include FOB, CFR and CIF — load port and supplier identity disclosed at contract stage to vetted counterparties.