2020 Ram ProMaster — Fluid Type Specs

Quick Reference

Fluid	Type/Spec	Capacity
Engine Oil	0W-20 Synthetic, API SN PLUS, ILSAC GF-5, Chrysler MS-6395	6.0 quarts (5.7 liters)
Engine Coolant	Mopar OAT (Purple), Chrysler MS-12106	8.5 quarts (8.0 liters)
Transmission Fluid	Mopar ZF 8&9 Speed ATF, Chrysler MS-90030	5.8-6.3 quarts (5.5-6.0 liters)
Brake Fluid	DOT 3	As required
Power Steering	Mopar Electric Power Steering Fluid, MS-11655	As required
Windshield Washer	-	7.9 quarts (7.5 liters)

Engine Oil

For the 2020 Ram ProMaster equipped with the 3.6L Pentastar V6 gasoline engine, the factory specifies a high-quality 0W-20 synthetic engine oil. This specific viscosity ensures optimal fuel efficiency, cold-start performance, and lubrication across the engine's operating range. To maintain your engine's health and warranty, the oil must meet Chrysler's MS-6395 specification. Additionally, look for oils that are certified API SN PLUS or newer (like API SP) and ILSAC GF-5.

Using the correct oil is not just a recommendation; it's critical for the function of advanced engine components like the Variable Valve Timing (VVT) system. Thicker oils can impede the performance of the VVT phasers, potentially leading to rough idling, poor performance, and eventually a check engine light. Always use a full synthetic 0W-20 oil to ensure proper lubrication and protection against sludge buildup.

The oil change interval can vary based on driving habits, which the van's oil life monitoring system tracks. However, a general rule of thumb is to change the oil and filter every 6,000 to 8,000 miles or once a year, whichever comes first. The oil capacity, including the filter, is 6.0 quarts (5.7 liters).

Engine Coolant

The 2020 ProMaster uses a specific Organic Acid Technology (OAT) coolant. This is not your grandfather's green antifreeze. The factory-fill coolant is Mopar OAT Antifreeze/Coolant 10 Year/150,000 Mile, which meets Chrysler specification MS-12106. This coolant is typically purple in color.

A critical point of service is to never mix coolant types. Adding a conventional (green), Hybrid OAT (HOAT, often orange or yellow), or any other type of coolant to the system can cause a chemical reaction that leads to gelling. This gel-like substance will clog the radiator, heater core, and coolant passages, leading to severe engine overheating and costly repairs. If the coolant is low, top it off only with a coolant that explicitly meets the MS-12106 specification. The system capacity is approximately 8.5 quarts (8.0 liters) and should be mixed in a 50/50 ratio with distilled water.

Transmission Fluid

The 2020 ProMaster is equipped with a 6-speed automatic transmission (the 62TE). The required fluid is Mopar ATF+4. This is a synthetic fluid with a distinct red color and a specific friction coefficient required for the transmission's clutch packs to engage smoothly and reliably.

Warning: Do not use "universal" or multi-vehicle ATFs, even if they claim to be compatible. Using anything other than an ATF+4 licensed fluid can result in transmission shudder, erratic shifting, and premature failure. Chrysler's ATF+4 specification is very robust, and using the correct fluid is paramount for longevity. Under normal driving conditions, the transmission fluid is considered "fill-for-life," but many technicians recommend a fluid and filter change every 60,000 miles for heavy-duty use to ensure a long service life. The service fill is typically between 5.8 and 6.3 quarts (5.5-6.0 liters), but a full system flush requires more. Always verify the level using the dipstick with the engine running and the transmission at operating temperature.

Brake Fluid

Brake fluid for the 2020 ProMaster is a standard DOT 3 fluid. While DOT 4 fluid has a higher boiling point and is technically compatible, it is also more hygroscopic, meaning it absorbs moisture more quickly. For most users, a high-quality DOT 3 fluid is sufficient and aligns with the manufacturer's recommendation. The most important aspect of brake fluid is its freshness. It should be flushed and replaced every two to three years, regardless of mileage, to prevent moisture contamination which can lead to a spongy brake pedal and corrosion of internal brake components.

Power Steering Fluid

The ProMaster utilizes an electro-hydraulic power steering system, which requires a specific fluid to function correctly. The correct fluid is Mopar Electric Power Steering Fluid, which meets Chrysler specification MS-11655. Do not substitute this with conventional power steering fluid or automatic transmission fluid, as this can damage the expensive electric power steering pump. Top-offs are rare unless there is a leak in the system.

Windshield Washer Fluid

There is no specific brand or type of windshield washer fluid required. Any commercially available blue washer fluid is acceptable. For winter use, a de-icing formula can help prevent freezing on the windshield. The reservoir has a large capacity of 7.9 quarts (7.5 liters).

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