Engineered Molecules for Every Opel & GM Engine: The Complete Dexos™ Portfolio

Clarity in an Evolving Dexos™ Market

The European automotive aftermarket is navigating significant confusion regarding GM and Opel specifications. The transition away from older standards, coupled with rumours of Dexos 2™ discontinuation, has created a fragmented and anxious market.

WOC OEM OFFICIAL solves this confusion not by forcing a premature transition, but by offering a clear, segmented product architecture. This structure protects existing volume while capturing the high-value future market across both diesel and petrol applications. When you choose WOC OEM OFFICIAL, you are choosing the exact engineered molecules approved by Opel and GM engineers.

Pillar 1: The Diesel Volume Protector — 5W-30 Dexos2™

There are millions of legacy Opel and Vauxhall diesel vehicles on European roads that were engineered specifically for the higher High-Temperature High-Shear (HTHS) viscosity (≥ 3.5 cP) provided by a 5W-30 grade.

By maintaining the 5W-30 Dexos2™ as a dedicated, active product, WOC serves the massive existing aftermarket demand. This prevents the confusion of forcing workshops into a Dexos D 5W-30 transition before they are ready, ensuring that mechanics have the exact, trusted, OEM Official formulation they need for the cars in their bays today.

• Approval: GM Dexos2™
• Key Benefit: DPF protection and severe thermal constraint endurance
• Application: Legacy Opel/GM Diesel fleet (MY 2010+)

The WOC Guarantee: Dexos 2 is not discontinued in Europe, and WOC guarantees its supply.

Pillar 2: The Petrol Volume Protector — 5W-30 Dexos1™ Gen 3

Parallel to the diesel fleet, a vast number of standard turbocharged gasoline direct-injection (TGDI) engines require the robust protection of a 5W-30 viscosity.

The 5W-30 Dexos1™ Gen 3 serves as the volume protector for the petrol segment. It delivers critical Low-Speed Pre-Ignition (LSPI) protection, enhanced oxidation resistance, and sludge prevention for millions of GM and Opel petrol engines. This ensures workshops have the exact, OEM-approved 5W-30 petrol solution without compromising on the latest Gen 3 performance standards.

• Approval: GM Dexos1™ Gen 3
• Key Benefit: Robust LSPI protection and oxidation resistance
• Application: Standard TGDI Petrol engines

Pillar 3: The Modern Petrol Solution — 0W-20 Dexos1™ Gen 3

As European emission standards tightened, Opel and GM introduced modern, downsized TGDI engines designed specifically around ultra-low viscosity oils to maximise fuel efficiency.

The 0W-20 Dexos1™ Gen 3 perfectly covers these modern petrol applications. It provides distributors with the exact right formulation for the newest GM petrol engines, ensuring that workshops do not compromise on LSPI protection while achieving the strict fuel economy and CO₂ emission targets engineered into the vehicle.

• Approval: GM Dexos1™ Gen 3
• Key Benefit: Maximum fuel economy and modern LSPI protection
• Application: Modern, downsized, highly efficient petrol engines

Pillar 4: The Future-Ready Diesel Standard — 0W-20 Dexos™D

The future of GM and Opel light-duty diesel engines strictly requires ultra-low viscosity oils to achieve stringent fuel economy and emissions compliance targets.

The 0W-20 Dexos™D positions WOC for this future. It captures the growing market of modern diesels that demand a lower HTHS viscosity while maintaining robust protection for advanced exhaust after-treatment systems. It is the ultimate expression of WOC's molecule engineering, ready for the vehicles rolling off the production line today.

• Approval: GM Dexos™D
• Key Benefit: Ultra-low viscosity for stringent emissions compliance
• Application: Next-generation light-duty diesel engines