2018 Mercedes-Benz Metris — Complete Fluid Specifications
AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.
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Quick reference
| Fluid | Type/Spec | Capacity |
|---|---|---|
| Engine Oil | Mercedes-Benz MB 229.5 or MB 229.51 approved synthetic 5W-40 or 5W-30 | ~7.4 quarts (2.1L M274 engine) |
| Engine Coolant | Mercedes-Benz Antifreeze/Coolant, Phosphate-free, Silicate-free (MB 325.0/325.6 equivalent) | ~9.5 quarts (2.1L M274 engine) |
| Transmission Fluid | Mercedes-Benz MB 236.15 (for 7G-TRONIC PLUS 722.9 transmission) | ~9.7-10.8 quarts (total fill) |
| Rear Differential | Mercedes-Benz Hypoid Gear Oil MB 235.7/235.74 (SAE 75W-85 or 75W-90) | ~1.4 quarts |
| Brake Fluid | DOT 4 PLUS (MB 331.0) | Verify in owner's manual |
| Power Steering Fluid | Electro-hydraulic system, no traditional power steering fluid | N/A (Electric Power Steering) |
| Washer Fluid | Mercedes-Benz Washer Fluid Concentrate or equivalent all-season with antifreeze properties | ~5.8 quarts |
Engine Oil
For your 2018 Mercedes-Benz Metris equipped with the 2.1L M274 turbo-diesel engine, Mercedes-Benz specifies the use of engine oils that meet either the MB 229.5 or MB 229.51 standard. These are high-performance synthetic oils designed to provide optimal lubrication, wear protection, and fuel efficiency. Typically, a 5W-40 or 5W-30 viscosity is recommended, but always consult your owner's manual or the authorized Mercedes-Benz service information for the exact viscosity specified for your operating climate.
Mercedes-Benz 229.5 oils are full synthetic low-ash oils, while 229.51 oils are low-SAPS (Sulphated Ash, Phosphorus, Sulphur) oils designed for vehicles equipped with diesel particulate filters (DPF) to prevent premature clogging. Using an oil that doesn't meet the specified MB standard can lead to premature engine wear, reduced fuel economy, and potential issues with emissions control systems. The oil capacity for the 2.1L M274 engine is approximately 7.4 quarts. Regular oil changes are crucial for the longevity of your engine, typically recommended every 10,000 miles or annually, whichever comes first. However, driving conditions and vehicle usage can influence this, so always adhere to the maintenance schedule outlined in your owner's manual.
Engine Coolant
The 2018 Mercedes-Benz Metris requires a specific type of engine coolant: a phosphate-free, silicate-free, hybrid organic acid technology (HOAT) or organic additive technology (OAT) coolant that meets Mercedes-Benz specification MB 325.0 or 325.6. This is typically a bluish-green or blue color, but always verify the specification rather than relying solely on color, as colors can be misleading. Using an incorrect coolant can lead to corrosion, scaling, and damage to the cooling system components, including the water pump, radiator, and heater core. Never mix different types of coolants, especially OAT with HOAT or IAT (inorganic additive technology), as this can lead to gel formation and system blockages.
The cooling system capacity for the 2.1L M274 engine is approximately 9.5 quarts. It
More specs for the 2018 Mercedes-Benz Metris
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2018 Mercedes-Benz Metris Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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