WELLEX 10W-40 CK-4 ULTRA: The Ultimate Protector for Your Modern Diesel

If you demand top-level performance and efficiency from your engine even under the most challenging working conditions, it's time to meet WELLEX 10W-40 CK-4 ULTRA Fully Synthetic Motor Oil. Formulated with cutting-edge technology, this oil is not just an oil, it's an investment that maximizes your equipment's efficiency and lifespan.

Your Benefits with WELLEX CK-4 ULTRA:

• DPF & Emission Systems Friendly: The advanced Low SAPS formula minimizes the risk of clogging and damage in Diesel Particulate Filters (DPF), SCR catalysts, and EGR systems. It extends the lifespan of emission systems, reducing your maintenance costs and ensuring your vehicle continues its eco-friendly performance.

• Superior Engine Protection and Cleanliness: Thanks to shear stability, it maintains its viscosity even under high mechanical stress, creating a steel-like protective shield against wear. It protects your engine against oil thickening and deposit build-up, enhancing internal cleanliness and extending the life of components.

• Maximum Savings: With low volatility and easy pumpability features, it helps reduce fuel consumption. Extended oil change intervals significantly reduce your maintenance frequency and operating costs.

• Confidence with Global Approvals: Approved according to the latest and strictest specifications from API CK-4, ACEA E6/E7/E9, and leading global commercial vehicle manufacturers (Volvo, Mercedes-Benz, MAN, Mack, Cummins, etc.). This is proof of a global standard of excellence.

Suitable for Which Vehicles and Engines?

• Heavy-duty trucks, trailers, tractors, and buses with EURO III, IV, V, and VI emission standards.

• All modern diesel engines equipped with Diesel Particulate Filter (DPF) and Selective Catalytic Reduction (SCR) systems.

• Turbocharged diesel engines with high-performance expectations.

• All diesel engines where the manufacturer specifies the requirement for ACEA E6, E7, E9, or API CK-4.

Choose WELLEX 10W-40 CK-4 ULTRA to provide your engine with protection that meets global standards. Maximize performance, minimize operating costs.

Global Excellence, Local Performance.

Equivalent Brands and Products

WELLEX 10W-40 CK-4 ULTRA offers much higher oxidation resistance and aeration control compared to the previous generation CI-4 oils. Here are the main professional counterparts in the industry:

• RESTOREPLUS: Wellex 10W-40 CK-4 Ultra

• MOBIL: Delvac Ultra 10W-40 Ultimate Protection (formerly known as Delvac 1 LE)

• SHELL: Rimula R6 LME 10W-40 (new generation CK-4 approved series)

• CASTROL: Vecton Long Drain 10W-40 E6/E9 (series meeting CK-4 specifications)

• TOTALENERGIES: Rubia Optima 3100 10W-40

• FUCHS: Titan Cargo LD 10W-40 (CK-4 Approved)

• PETROL OFİSİ: Maximus Euro 6 10W-40 (current CK-4 series)

• VALVOLINE: Premium Blue One Solution 9200 10W-40

Technical Information and Features

Restoreplus Wellex 10W-40 CK-4 Ultra is taken as a reference, and here are the common technical values of equivalent products that replace products in this segment:

• Latest API CK-4 Approval: Oxidation Stability is 50% higher compared to older generation (CI-4 and CJ-4) oils. This allows the oil to operate at much higher temperatures without degrading.

• Advanced Emission System Protection: The Low-Sulfated Ash (Low-SAPS) content prevents poisoning or clogging of DPF (Diesel Particulate Filter) and SCR (AdBlue) systems.

• Air Release and Foam Control: The term "Emulsification System Protected" refers to the rapid release of air trapped in the oil. This prevents Cavitation in high-pressure lubrication channels and ensures a consistent oil film.

• Long Lasting TBN Value: Thanks to its advanced bases, it neutralizes acids originating from sulfur in the fuel for a longer period. This maximizes Oil Change Intervals (subject to OEM approval).

• Piston and Ring Cleanliness: Its resistance to high-temperature deposits increased. Prevents ring sticking, thus preventing Compression and Power loss in the engine.

• Fuel Economy and Friction: With an advanced viscosity index, it reduces internal friction in the engine, thus providing significant Fuel Economy across the fleet.

• Wear Protection: Contains Extra Wear Protection additives required by the CK-4 standard for valve mechanisms and cylinder liners.

Usage Area: This product is safely used especially in next-generation trucks within the Euro 6 emission class (Mercedes Actros, Scania, Volvo, etc.), buses, and heavy-duty construction machinery. Thanks to its backward compatibility, it can also be preferred for top-level protection in Euro 5 and Euro 4 engines.