2018 Ram 1500 Oil Capacity & Filter Guide

The 2018 Ram 1500 with the 5.7L HEMI V8 engine takes 7 quarts (6.6L) of oil. For the 3.6L Pentastar V6, the capacity is 6 quarts (5.6L), and for the 3.0L EcoDiesel V6, it is 10.5 quarts (9.9L).

Quick Answer: 2018 Ram 1500 5.7L HEMI

• Oil Capacity: 7 quarts (6.6L) with filter change
• Recommended Oil Weight: SAE 5W-20
• Oil Specification: API Certified, meeting Chrysler MS-6395 specification
• Oil Filter (OEM): Mopar 04892339AA
• Oil Filter (Aftermarket Cross-Reference):
  • Fram: PH10060
  • Wix: WL10010
  • Mobil 1: M1-113A

Capacity by Engine Option

Oil Change Interval

The 2018 Ram 1500 is equipped with an oil life monitoring system that will alert you when it's time for a change. However, the interval can vary based on driving habits.

• Normal Duty: Do not exceed one year or 10,000 miles. The oil life monitor will typically indicate a change is needed between 8,000 and 10,000 miles under ideal conditions.
• Severe Duty: If you frequently tow, haul heavy loads, idle for long periods, or drive in dusty or extreme temperature conditions, plan to change the oil every 4,000 to 5,000 miles.

Drain Plug Torque

Properly tightening the drain plug is crucial to prevent leaks.

• Drain Plug Torque (3.6L V6 & 5.7L V8): 20 ft-lbs (27 Nm)
• Drain Plug Torque (3.0L EcoDiesel): 22 ft-lbs (30 Nm)
• Crush Washer: It is highly recommended to replace the drain plug gasket with each oil change to ensure a proper seal. Consult your dealer for the correct part number.

How to Change the Oil

Changing the oil on a 2018 Ram 1500 is a straightforward process for a DIYer.

1. Run the engine for a few minutes to warm the oil.
2. Safely raise the front of the truck using ramps or a jack and jack stands.
3. Place a drain pan under the oil pan and remove the drain plug.
4. While the oil drains, locate and remove the oil filter. Be prepared for some oil to spill.
5. Wipe the filter mounting surface clean and apply a thin layer of new oil to the gasket of the new filter.
6. Install the new filter and tighten it hand-tight plus an additional quarter-turn.
7. Reinstall the drain plug with a new gasket and torque it to specification.
8. Fill the engine with the correct amount and type of new oil.
9. Start the engine, let it run for 30 seconds to circulate the new oil, then shut it off.
10. Wait a few minutes, then re-check the oil level on the dipstick and top off if necessary.
11. Reset the oil life monitor through the instrument cluster display.

Common Issues / Tips

• Correct Dipstick Reading: For the 5.7L HEMI, ensure you are checking the oil level on a level surface after the engine has been off for at least 5-10 minutes. This allows all the oil to drain back into the pan for an accurate reading.
• Filter Access: The oil filter on the 5.7L HEMI is located on the front of the engine, just above the front differential on 4x4 models. Access can be a bit tight, but it is reachable from underneath. A cap-style filter wrench can make removal easier.
• EcoDiesel Specifics: The 3.0L EcoDiesel uses a cartridge-style filter located on top of the engine under a plastic cover. It also requires a specific, robust diesel engine oil (API CJ-4 or better) to protect the emissions system. Do not substitute other oils.

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