2015 Ram ProMaster 2500 3.6L Engine Oil & Maintenance Guide

AMSOIL diesel oil guide for 2015 Ram Promaster 2500
AMSOIL diesel oil guide for trucks, vans, SUVs and diesel engines

What oil does a 2015 Ram ProMaster 2500 3.6L take?

For the 2015 Ram ProMaster 2500 with the 3.6L 6-cylinder engine (Engine Code G), the recommended viscosity is 5W-20 for all temperatures. The oil capacity is 5.9 quarts when performing a change with a new filter. AMSOIL recommends using high-quality synthetic options like Signature Series 5W-20 for maximum engine protection.

AMSOIL product recommendations

Based on the AMSOIL lookup for your vehicle, here are the recommended fluids and filters to maintain optimal performance.

Engine Oil Options

Product Name Viscosity Part Code
AMSOIL Signature Series 100% Synthetic 5W-20 ALMQT-EA
AMSOIL Extended-Life 100% Synthetic 5W-20 XLMQT-EA
AMSOIL OE 100% Synthetic 5W-20 OEMQT-EA
AMSOIL 5W-20 High-Mileage Synthetic 5W-20 HM520QT-EA

Oil Filter Options

Product Name Part Code
AMSOIL Oil Filter EA15K19-EA
WIX Oil Filter WL10010-EA

Other Essential Fluids

Component Product Name Part Code
Coolant Passenger Car & Light Truck Antifreeze ANTPC1G-EA
Coolant Propylene Glycol Antifreeze ANT1G-EA
Transmission Signature Series Multi-Vehicle ATF ATFPK-EA

Engine Oil Specifications & Details

Proper lubrication is vital for the 3.6L engine’s longevity, especially under commercial duty cycles.

Oil Capacity and Torque

Specification Value
Oil Viscosity 5W-20 (All TEMPS)
Capacity (with filter) 5.9 quarts
Oil Drain Plug Torque 20 ft/lbs

Note: If using E85 or M85 fuels, use AMSOIL of the appropriate viscosity for the OEM recommended drain interval. Extended oil drains can only be extended through oil analysis when these fuels are used.

Air and Vapor Filters

No recommendations available for the Air Filter or Oil Vapor Filter from the provided source data.

Diesel maintenance notes for this vehicle

While the 3.6L engine is a gasoline variant, users often categorize these vehicles under diesel/commercial headings due to their utility in heavy-duty environments. Maintenance should focus on:

  • Cooling System Integrity: The coolant capacity is 10.6 quarts. Ensure proper mixing if using concentrated formulations.
  • Transmission Service: For the 6-speed 62TE transmission, the total fill capacity is 9 quarts, with an initial fill of 5.5 quarts.
  • Filter Changes: Always check oil levels after refilling to ensure accuracy.

Common diesel oil-related concerns and how AMSOIL products may help

Commercial vehicles often face unique stresses that can impact fluid longevity.

Concern Why it matters AMSOIL Product How it may help Limitation
Turbocharger Wear High heat and speed can cause coking. Signature Series Protects turbochargers 72% better than required by GM dexos1 Gen 2 spec. Requires proper service intervals.
Engine Sludge Deposits reduce engine life. OE Synthetic Fights sludge and deposits with 100% synthetic formulation. Not a repair for existing damage.
High Mileage Wear Older engines have increased clearances. High-Mileage Enhanced anti-wear additives and boosted detergents. Designed for vehicles over 75,000 miles.

Common maintenance concerns for this vehicle

Based on NHTSA consumer reports, owners of the 2015 Ram ProMaster 2500 have noted several areas for attention:

  • Engine Cooling: Reports include issues with radiator problems and cooling fan failures.
  • Power Train/Electrical: Some complaints involve accelerator pedal response and power control module failures.
  • General Engine Issues: Abnormal shuddering has been reported, which may relate to engine or cooling components like fan bearings.

Note: NHTSA complaint summaries are owner reports and should not be treated as verified defects.

Recall, TSB, and manufacturer communication notes

Official NHTSA recall research for the 2015 Ram ProMaster 2500 returned no recall records at the time of this report. However, owners should always verify open recalls by VIN, as applicability depends on production date, trim, and specific equipment.

About this vehicle

The 2015 Ram ProMaster 2500 is a commercial vehicle designed primarily for utility and cargo transport. It belongs to a model family with significant international engineering ties; the North American ProMaster line is closely related to the Fiat Ducato, which was developed through joint ventures involving FCA Italy and the PSA Group.

Because of this lineage, many mechanical components or service procedures may share similarities with European-market vans like the Citroën Jumper or Peugeot Boxer. This vehicle is commonly used for last-mile delivery, mobile workshops, and commercial hauling. Due to high-duty cycles and heavy payloads, consistent maintenance of the cooling system, transmission, and lubrication is critical for long-term reliability.

Users should note that while this model is often discussed in heavy-duty contexts, parts compatibility may sometimes be listed under Fiat or Chrysler nomenclature due to the Stellantis brand relationship. Always cross-reference engine codes (such as the 3.6L G ERB) with official service manuals before selecting fluids.

Common questions about this vehicle’s diesel oil and maintenance

How much oil does my 2015 Ram ProMaster 2500 take?

The 3.6L engine requires 5.9 quarts of oil when replacing the filter.

What is the correct oil viscosity for this engine?

The AMSOIL lookup specifies a viscosity of 5W-20 for all temperatures.

Can I extend my oil change intervals?

If using E85 or M85 fuels, extended drains should only be performed after conducting an oil analysis.

What is the torque spec for the oil drain plug?

The oil drain plug should be torqued to 20 ft/lbs.

Does AMSOIL offer a high-mileage option?

Yes, AMSOIL offers a 5W-20 100% Synthetic High-Mileage Motor Oil (HM520QT-EA) specifically for vehicles with over 75,000 miles.

How do I check for open recalls?

Owners should verify current recalls by using their specific Vehicle Identification Number (VIN) through official manufacturer or NHTSA channels.


Disclaimer: Information provided is based on available source data. Always consult your owner’s manual or a certified technician to confirm specifications for your specific VIN.

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