2025 Mercedes-Benz Sprinter Fluid Type Specs

As an ASE-certified master technician, ensuring the correct fluids are used in your 2025 Mercedes-Benz Sprinter is paramount for its longevity, performance, and to maintain your warranty. Mercedes-Benz vehicles are engineered with specific fluid requirements that often exceed generic industry standards. This guide provides a comprehensive overview of all factory-spec fluids for your Sprinter.

Quick reference

Fluid	Type/Spec	Capacity
Engine Oil	Mercedes-Benz MB 229.51, MB 229.52, or MB 229.61 (Diesel)	Varies by engine; verify in owner's manual
Engine Coolant	Mercedes-Benz MB 325.0, MB 325.6 (Silicate-free HOAT/OAT)	Varies by engine; verify in owner's manual
Transmission Fluid	Mercedes-Benz MB 236.14, MB 236.15, MB 236.16 (Varies by transmission type)	Varies; verify in owner's manual
Front Differential	Mercedes-Benz MB 235.7, MB 235.74 (Hypoid Gear Oil)	Varies by axle; verify in owner's manual
Rear Differential	Mercedes-Benz MB 235.7, MB 235.74 (Hypoid Gear Oil)	Varies by axle; verify in owner's manual
Brake Fluid	Mercedes-Benz MB 331.0 (DOT 4 Plus)	Varies; verify in owner's manual
Power Steering	Mercedes-Benz MB 236.3 (Automatic Transmission Fluid)	Varies; verify in owner's manual
Washer Fluid	Commercial washer fluid (unmixed or pre-mixed)	Varies; verify in owner's manual
DEF (Diesel)	AdBlue (ISO 22241)	Approximately 22-24 liters (5.8-6.3 gallons)

Engine Oil

For your 2025 Mercedes-Benz Sprinter diesel engine, always use engine oils that meet the specific Mercedes-Benz approvals, such as MB 229.51, MB 229.52, or MB 229.61. These specifications denote long-life, low-ash, high-performance oils designed to protect sophisticated emissions systems like Diesel Particulate Filters (DPF). The exact viscosity (e.g., 5W-30, 0W-30) will depend on the ambient temperatures and the specific engine variant in your Sprinter. Always consult your owner's manual or the under-hood sticker for the precise oil viscosity recommended for your climate and engine type. Using oils that do not meet these specifications can lead to premature wear, DPF clogging, and engine damage. The recommended oil change interval is typically between 10,000 to 20,000 miles or annually, whichever comes first, but can vary based on driving conditions and Mercedes-Benz's FSS (Flexible Service System).

Engine Coolant

The 2025 Mercedes-Benz Sprinter requires a specific silicate-free, hybrid organic acid technology (HOAT) or organic acid technology (OAT) coolant that meets Mercedes-Benz MB 325.0 or MB 325.6. These coolants are typically blue or sometimes pink/purple. Never mix different types of coolants (e.g., HOAT with traditional IAT or universal coolants), as this can lead to chemical reactions, gel formation, corrosion, and severe damage to the cooling system components, including the water pump, radiator, and heater core. Always use distilled water when mixing concentrate coolant, never tap water. The typical service interval for coolant is around 150,000 miles or 10 years, but it's always best to verify in your owner's manual.

Transmission Fluid

Mercedes-Benz Sprinters utilize advanced automatic transmissions that demand very specific fluids. Depending on the exact transmission installed in your 2025 Sprinter (e.g., 7G-TRONIC, 9G-TRONIC), the required fluid will fall under Mercedes-Benz MB 236.14, MB 236.15, or MB 236.16 specifications. These are highly specialized fluids, and using "universal" or incorrect automatic transmission fluid (ATF) can cause shuddering, hard shifts, transmission slippage, and eventually, catastrophic transmission failure. Always consult your owner's manual or an authorized Mercedes-Benz service center to identify the exact fluid specification for your vehicle. Mercedes-Benz generally recommends transmission fluid and filter changes between 60,000 to 80,000 miles, but this can vary.

Front and Rear Differential Fluid

Mercedes-Benz Sprinters, especially AWD models, have front and rear differentials that require robust lubrication. The recommended fluid for the differentials is a hypoid gear oil meeting Mercedes-Benz MB 235.7 or MB 235.74. These are typically an SAE 75W-90 or 75W-140 synthetic gear oil. It is crucial to use the correct specification to prevent wear and noise. Some differentials, particularly those with a limited-slip differential (LSD) if equipped, might require an additional friction modifier additive, though most modern synthetic gear oils meeting the MB spec will have this incorporated. Verify with your owner's manual. Differential fluid service intervals are often every 40,000 to 60,000 miles, especially under heavy-duty use or towing.

Brake Fluid

The 2025 Mercedes-Benz Sprinter, like all modern Mercedes-Benz vehicles, requires a high-performance brake fluid. The specified fluid is a DOT 4 Plus type that meets Mercedes-Benz MB 331.0. This fluid has a higher wet boiling point compared to standard DOT 3 or even some DOT 4 fluids, which is critical for maintaining braking performance under demanding conditions and preventing vapor lock. Never use DOT 5 (silicone-based) fluid, as it is incompatible with your Sprinter's brake system components. Brake fluid is hygroscopic (absorbs moisture), which lowers its boiling point over time. Mercedes-Benz recommends brake fluid replacement every two years, regardless of mileage, to ensure optimal braking safety.

Power Steering Fluid

For the power steering system, your 2025 Mercedes-Benz Sprinter typically uses a specialized fluid that meets Mercedes-Benz MB 236.3. This is often an automatic transmission fluid (ATF) type, specifically designed for power steering applications in Mercedes-Benz vehicles. Using an incorrect power steering fluid can lead to pump whine, reduced steering assistance, and premature wear of the power steering pump and rack and pinion assembly. Consult your owner's manual for the exact fluid and capacity. Power steering fluid usually does not have a strict replacement interval, but it's good practice to inspect its condition during regular service and replace if it appears dark or contaminated.

Washer Fluid

Any commercially available washer fluid is suitable for your 2025 Mercedes-Benz Sprinter. For optimal performance and to prevent freezing in cold climates, use a pre-mixed or concentrated washer fluid with freeze protection. Some premium washer fluids also include bug and road grime removers, which can be beneficial. Avoid using plain water, especially in freezing temperatures, as it can cause the washer system to freeze and potentially damage the pump or lines.

Diesel Exhaust Fluid (DEF)

If your 2025 Mercedes-Benz Sprinter is equipped with a diesel engine, it will utilize Diesel Exhaust Fluid (DEF), also known as AdBlue. DEF is a non-toxic solution of urea and de-ionized water used in Selective Catalytic Reduction (SCR) systems to reduce nitrogen oxide (NOx) emissions. It is crucial to only use DEF that meets the ISO 22241 standard. You can find this standard printed on the DEF container. Never use engine oil additives, coolant, or any other fluid in the DEF tank, as this will severely damage the SCR system, leading to costly repairs and potential vehicle derating. The DEF tank capacity is approximately 22-24 liters (5.8-6.3 gallons), and consumption varies depending on driving style and conditions. The vehicle's instrument cluster will display warnings when the DEF level is low, prompting you to refill.

Find a trusted shop on Repairius.