Purpose and Specifications

LIQUI MOLY Top Tec ATF 1900 (3648) is a high-performance automatic transmission fluid designed for Mercedes-Benz vehicles requiring MB 236.15 specification. This 1-liter blue synthetic oil delivers smooth shifting, reduces fuel consumption, and boosts transmission efficiency with its low viscosity that flows easily in cold starts down to -40°C and stays stable up to 150°C operating temperatures.

It provides excellent wear protection, corrosion resistance, and consistent friction for reliable performance in 7-speed automatic transmissions like those in C-Class, E-Class, and Sprinter models. Expect extended transmission life with proper use, plus quieter operation and better overall drivability.

When to Use / Replace?

Use this fluid for filling or topping off Mercedes-Benz automatics approved for MB 236.15 during service. Replace every 5 years or 80,000-120,000 km (50,000-75,000 miles), whichever comes first, or sooner if you notice rough shifting, slipping, or unusual noises. Always perform a full flush with filter change at operating temperature for best results. Shelf life is 5 years unopened when stored cool and dry.

• Ideal for W204, W212, W205 C-Class and E-Class models
• Perfect match for Sprinter W906 transmissions
• Supports professional oil changes with flush equipment

Frequently Asked Questions

Is LIQUI MOLY 3648 compatible with my Mercedes transmission?
Yes, it's specifically formulated for MB 236.15 spec in 7-speed automatics like C-Class and E-Class for smooth, reliable shifts.

How often should I change this transmission fluid?
Every 5 years or 80,000-120,000 km under normal driving; check service history and test drive to confirm.

Does it improve fuel economy?
Yes, its low viscosity reduces drag for better efficiency and lower fuel use without sacrificing protection.