2021 Ram ProMaster Fluid Type Specs
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 (approximate) |
|---|---|---|
| Engine Oil | SAE 0W-20, API SN Plus, SP, or ILSAC GF-6 | 6.0 quarts (5.7 liters) |
| Engine Coolant | Mopar OAT Antifreeze/Coolant, Pink/Violet (MS-90032) | 11.5 quarts (10.9 liters) |
| Transmission Fluid | Mopar ATF+4 Automatic Transmission Fluid | 6.9 quarts (6.5 liters) (drain/refill) |
| Brake Fluid | DOT 3 or DOT 4 | Varies |
| Power Steering | Mopar ATF+4 Automatic Transmission Fluid | Varies |
| Washer Fluid | Mopar Windshield Washer Concentrate or equivalent | 1 gallon (3.8 liters) |
Engine Oil
For your 2021 Ram ProMaster, the factory-specified engine oil is SAE 0W-20. It is crucial to use oil that meets API SN PLUS, API SP, or ILSAC GF-6 standards. These specifications indicate the oil's ability to protect against Low-Speed Pre-Ignition (LSPI), a critical consideration for modern turbocharged engines, which the ProMaster's 3.6L Pentastar V6 uses.
Capacity: Approximately 6.0 quarts (5.7 liters) including the filter.
Interval: The Ram ProMaster features an Oil Change Indicator System. This system monitors various operating conditions and illuminates a light when an oil change is due. Under normal operating conditions, this can be up to 10,000 miles or 12 months, whichever comes first. However, severe duty cycles, such as heavy hauling, frequent short trips, or extreme temperatures, may trigger more frequent oil change reminders. Always consult your owner's manual for the most accurate and up-to-date information.
Pitfalls: Always use the specified 0W-20 viscosity. Using a different weight can lead to increased engine wear and decreased fuel efficiency. Furthermore, ensure the oil meets the API SN PLUS/SP or ILSAC GF-6 standards to ensure proper protection against LSPI. Do not mix different types or brands of oil, as this can dilute the additive package and compromise performance.
Engine Coolant
Your 2021 Ram ProMaster requires Mopar OAT (Organic Additive Technology) Antifreeze/Coolant that meets specification MS-90032. This coolant is typically pink or violet in color. OAT coolants are designed for extended service intervals and provide excellent corrosion protection.
Capacity: Approximately 11.5 quarts (10.9 liters).
Interval: The factory-fill OAT coolant has an extended service life, often up to 10 years or 150,000 miles, whichever comes first. However, it's good practice to check the coolant level and condition periodically. If the coolant appears discolored or has particles, it may indicate a problem.
Pitfalls: NEVER mix OAT coolant with HOAT (Hybrid Organic Additive Technology) or traditional IAT (Inorganic Additive Technology) coolants. Mixing different coolant chemistries can cause adverse chemical reactions, leading to gel formation, corrosion, and blockages within the cooling system, potentially causing severe engine damage. Always use distilled water when mixing with concentrated coolant to prevent mineral deposits.
Transmission Fluid
The 2021 Ram ProMaster uses a 9-speed automatic transmission, which requires Mopar ATF+4 Automatic Transmission Fluid. This is a highly specific synthetic fluid formulated for Chrysler/Dodge/Ram transmissions and is not interchangeable with other ATF types.
Capacity: Approximately 6.9 quarts (6.5 liters) for a pan drop and filter change. A complete flush will require more.
Interval: Under normal driving conditions, the transmission fluid is typically considered
More specs for the 2021 Ram ProMaster
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
2021 Ram ProMaster 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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