2017 Mercedes-Benz Sprinter: Complete Fluid Specifications

As an ASE-certified master technician, I understand the critical importance of using the correct fluids in your 2017 Mercedes-Benz Sprinter. Using the wrong fluid can lead to premature wear, reduced performance, and costly repairs. This guide provides a comprehensive overview of all factory-spec fluids for your Sprinter, including capacities, types, and crucial notes for maintenance.

Quick reference

Fluid	Type/Spec	Capacity (approximate)
Engine Oil	Mercedes-Benz MB 229.51 or MB 229.52	12.5–13.5 US Quarts
Engine Coolant	Mercedes-Benz Spec MB 325.0, MB 325.5, or MB 325.6 (OAT)	10.5–12.0 US Quarts
Transmission Fluid	Mercedes-Benz Spec MB 236.14 or MB 236.15 (NAG2/NAG3)	7.5–9.5 US Quarts
Rear Differential	Mercedes-Benz Spec MB 235.61 (75W-90)	1.8–2.3 US Quarts
Brake Fluid	DOT 4 Plus or Mercedes-Benz Spec MB 331.0	1.0–1.2 US Quarts
Power Steering	Mercedes-Benz Spec MB 236.3 (Pentosin CHF 11S or 202)	1.1 US Quarts
Washer Fluid	Standard Windshield Washer Fluid	1.0–1.3 US Gallons
DEF (Diesel Exhaust Fluid)	ISO 22241 / AdBlue	4.5–5.8 US Gallons

Always verify capacities and specific fluid requirements in your owner's manual or OEM service information, as these can vary based on engine size, drivetrain, and specific model variations.

Engine Oil

For your 2017 Mercedes-Benz Sprinter, the choice of engine oil is crucial for the longevity and performance of its sophisticated diesel engine (OM642 V6 or OM651 I4). Mercedes-Benz specifies low-ash, synthetic oils that meet specific MB approvals.

• Type/Spec: You'll need an oil meeting Mercedes-Benz MB 229.51 or MB 229.52 specifications. These are typically full synthetic, low SAPS (Sulfated Ash, Phosphorus, Sulfur) oils designed for vehicles with Diesel Particulate Filters (DPF).
• Viscosity: While the MB 229.51/229.52 spec dictates the base chemistry, common viscosities include 5W-30 and 5W-40. Always consult your owner's manual to confirm the preferred viscosity for your specific engine and climate.
• Capacity: Approximately 12.5 to 13.5 US quarts depending on the engine (OM642 V6 vs. OM651 I4). Always use the dipstick for the final fill level verification.
• Interval: Mercedes-Benz typically recommends oil change intervals of 10,000 miles or annually, whichever comes first, under normal driving conditions. Severe duty or heavy use may necessitate shorter intervals.
• Pitfalls: Never use an oil that does not meet the MB 229.51 or MB 229.52 specification. Using high-ash oils will clog your DPF prematurely, leading to expensive repairs and potential emissions system failures. Do not mix different oil specifications.

Engine Coolant

Maintaining the correct engine temperature is vital. Mercedes-Benz Sprinters utilize a specific type of coolant.

• Type/Spec: Your Sprinter requires an Organic Acid Technology (OAT) coolant that meets Mercedes-Benz Spec MB 325.0, MB 325.5, or MB 325.6. These coolants are typically blue or sometimes pink/purple in color. Do not confuse them with traditional green or yellow coolants.
• Mixture: Always use a 50/50 mix of approved coolant and distilled water for optimal freeze protection and corrosion inhibition.
• Capacity: Approximately 10.5 to 12.0 US quarts.
• Interval: Mercedes-Benz generally recommends coolant replacement every 5 years or 100,000 miles, but it's wise to check condition and level periodically.
• Pitfalls: Never mix different coolant types (e.g., OAT with HOAT or IAT). Doing so can cause chemical reactions that lead to sludge formation, blockages, and severe engine damage. Use only distilled water for mixing, not tap water, to prevent mineral deposits.

Transmission Fluid

The automatic transmission in your Sprinter is a precisely engineered component requiring very specific fluid.

• Type/Spec: For the 7G-Tronic (NAG2) or 9G-Tronic (NAG3) automatic transmissions found in 2017 Sprinters, you'll need an ATF that meets Mercedes-Benz Spec MB 236.14 (for NAG2) or MB 236.15 (for NAG3). These are highly specialized synthetic fluids. Examples include Fuchs ATF 4134 (236.14 equivalent) or Shell ATF 134FE (236.15 equivalent).
• Capacity: Approximately 7.5 to 9.5 US quarts for a drain and fill, though a complete flush will require more. Capacities can vary by transmission type and service procedure.
• Interval: Mercedes-Benz often considers transmission fluid to be a "lifetime fill" under ideal conditions. However, for longevity, especially in commercial or heavy-duty use, an interval of 60,000 to 80,000 miles is a prudent recommendation. Always consult your owner's manual for the most accurate service schedule for your specific vehicle.
• Pitfalls: Using any generic or "universal" ATF is absolutely forbidden and will almost certainly lead to transmission damage. Even fluids claiming to be "Mercedes compatible" without explicitly stating MB 236.14 or 236.15 compliance should be avoided. The Sprinter's transmission is highly sensitive to fluid properties.

Rear Differential Fluid

Your Sprinter's rear differential requires a robust gear oil to handle torque and prevent wear.

• Type/Spec: A synthetic gear oil meeting Mercedes-Benz Spec MB 235.61 (75W-90) is typically required. Some differentials may specify other viscosities like 75W-85 or 75W-140, so always confirm with your specific vehicle's owner's manual.
• Capacity: Approximately 1.8 to 2.3 US quarts, depending on differential size and axle ratio.
• Interval: A common recommendation is every 50,000 to 100,000 miles, or if subjected to frequent heavy towing or extreme temperatures, more often.
• Pitfalls: Ensure you use the correct viscosity and specification. Using GL-5 gear oil is generally fine if it meets the MB 235.61 spec. Some Sprinters (rarely outside of modified applications) might have limited-slip differentials, which would require an LS additive, but for most standard Sprinter applications, this is not a concern.

Brake Fluid

Brake fluid is hygroscopic (absorbs moisture) and degrades over time, making regular replacement critical for safety.

• Type/Spec: Your Sprinter utilizes DOT 4 Plus brake fluid or fluid meeting Mercedes-Benz Spec MB 331.0. This is a high-performance brake fluid designed for ABS and ESP systems.
• Capacity: Approximately 1.0 to 1.2 US quarts for a complete bleed, but plan for slightly more to ensure a thorough flush.
• Interval: Mercedes-Benz recommends brake fluid replacement every 2 years, regardless of mileage. This is crucial due to the fluid's hygroscopic nature.
• Pitfalls: Never use DOT 5 (silicone-based) brake fluid, as it is incompatible with DOT 3/4/5.1 systems. Always keep brake fluid containers sealed, as exposure to air introduces moisture and degrades the fluid. Use only fresh fluid from a sealed container.

Power Steering Fluid

The power steering system in your Sprinter uses a specialized hydraulic fluid.

• Type/Spec: A hydraulic fluid meeting Mercedes-Benz Spec MB 236.3 is required. This is often a green-colored fluid, such as Pentosin CHF 11S or CHF 202.
• Capacity: Approximately 1.1 US quarts.
• Interval: Often considered a "lifetime" fluid, but replacing it every 60,000 to 100,000 miles or with any power steering component replacement is beneficial for system longevity.
• Pitfalls: Using generic power steering fluid or transmission fluid (which some older vehicles used) can damage the power steering pump and other components. Stick strictly to the MB 236.3 specification.

Washer Fluid

While seemingly simple, using appropriate washer fluid is important for visibility and component protection.

• Type/Spec: Standard automotive windshield washer fluid is suitable. In colder climates, ensure it has adequate freeze protection.
• Capacity: Approximately 1.0 to 1.3 US gallons.
• Interval: As needed.
• Pitfalls: Never use plain water, especially in freezing temperatures, as it can crack the reservoir or damage the pump and lines. Avoid harsh detergents that can damage paint or trim.

DEF (Diesel Exhaust Fluid)

For diesel Sprinters with Selective Catalytic Reduction (SCR) systems, DEF is essential for emissions compliance.

• Type/Spec: DEF must meet ISO 22241 standards. It is a non-toxic solution of 32.5% high-purity urea and 67.5% deionized water, commonly branded as AdBlue.
• Capacity: Approximately 4.5 to 5.8 US gallons in the DEF tank.
• Interval: DEF is consumed continually as the engine runs. The vehicle's gauge and warning system will alert you when it needs refilling. Consumption rates vary based on driving style and conditions.
• Pitfalls: Never use anything other than ISO 22241 compliant DEF. Do not put DEF in the diesel fuel tank, and do not put diesel fuel in the DEF tank; either mistake will cause severe engine and emissions system damage. Keep DEF stored in a cool, dry place and be aware of its shelf life (typically 1-2 years). Do not let DEF freeze and thaw repeatedly.

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