Purpose and Specifications

RAVENOL Transfer Fluid BW 44 is a fully synthetic transfer case fluid designed for electronically controlled active transfer cases in modern all-wheel-drive vehicles. This 1-liter bottle contains a premium PAO-based fluid engineered to meet Mercedes-Benz MB 236.13 specification and is compatible with Borg-Warner BW 44-40 and BW 44-44 transfer case systems from 2016 onward.

This fluid is specifically formulated for vehicles that require precise power distribution between front and rear axles. It works in extreme conditions—from freezing winters to high-temperature highway driving—while maintaining consistent performance under heavy load.

Key Benefits

• Winter Performance: Flows smoothly at temperatures as low as -40°C, ensuring your transfer case engages instantly in cold weather
• Load Stability: Maintains thick, protective film under the highest driving stresses without breaking down
• Long-Term Protection: Resists oxidation and prevents wear, corrosion, and foam formation that can damage internal clutches and gears
• Seal Compatibility: Neutral formula won't degrade rubber seals, preventing leaks over time

When to Use / Replace?

Transfer case fluid typically requires replacement every 80,000 to 160,000 kilometers (50,000 to 100,000 miles), depending on driving conditions and your vehicle manufacturer's recommendations. Check your owner's manual for the exact interval for your model.

Replace the fluid if you notice:

• Grinding or clunking sounds when shifting between 2WD and 4WD modes
• Difficulty engaging all-wheel-drive or four-wheel-drive
• Fluid leaks under the vehicle near the transfer case
• Burning smell from the undercarriage during heavy towing or off-road use

This product is shelf-stable for 3 to 5 years in unopened, properly stored containers away from extreme heat.

Vehicle Compatibility

Mercedes-Benz: S-Class W220, E-Class W211, C-Class W203 4Matic models

Chrysler / Dodge: 300C LX, Dodge Charger LX/LD, Dodge Magnum LX with BorgWarner transfer cases

Ram / Jeep: Models equipped with BW 44-40 or BW 44-44 active on-demand transfer cases

Frequently Asked Questions

Q: Can I use this fluid in my manual transmission?
A: No. RAVENOL BW 44 is exclusively for transfer cases. Using it in a manual transmission will cause shifting problems and potential transmission failure. Always verify your vehicle's specific fluid requirement in the owner's manual.

Q: Is this fluid compatible with my vehicle's seals and gaskets?
A: Yes. This fluid is formulated to be neutral toward all standard rubber sealing materials, preventing degradation and leaks that cheaper alternatives may cause.

Q: How do I know if my transfer case needs this fluid?
A: Check your owner's manual for the OEM fluid specification number (such as MB 236.13 or Mopar 68089195AA). If your manual specifies BW 44 compatibility, this product is correct. When in doubt, contact your dealership with your vehicle identification number (VIN).