How many quarts of oil does a 6.4 Hemi take?

6.4 Hemi oil capacity ranges from 7 qt with filter across the listed applications. A common reference point is 7 qt with filter for 2014-2018 Ram 2500 / 3500 with 6.4L Hemi.

Does 6.4 Hemi oil capacity include the filter?

Yes. The capacity values on this page are with a new oil filter, which is the number normally used during an oil change.

Why do 6.4 Hemi oil capacity references differ?

The difference usually comes from model year, vehicle application, oil pan, emissions package, or whether the source is listing a with-filter service fill.

verifiedEngine family guide

6.4 Hemi Oil Capacity by Year

Most Ram Heavy Duty trucks with the 6.4L Hemi use 7.0 qt with filter. SRT passenger-car 392 Hemi applications can differ, so this guide focuses on Ram truck service fills. Use the table and finder below to match the exact year and application before refilling.

Most common

7 qt

2014-2018

Capacity range

7 qt

with filter

Oil spec

Mopar MS-12633 / MS-A0921 where listed

verify in manual

Capacity Finder

Check your year and truck series

YearTruck series

Oil capacity with filter

7qt6.6 L

Use the oil approval listed in the truck manual. Do not assume the same spec as a 5.7L Hemi.

Oil Capacity by Year and Application

All numbers below are with a new oil filter.

YearsApplicationWith filterLitersOil spec

2014-2018Ram 2500 / 3500 with 6.4L Hemi7 qt6.6 LMopar MS-12633 / MS-A0921 where listed

2019-2026Ram 2500 / 3500 with 6.4L Hemi7 qt6.6 LMopar MS-A0921 / API SP where listed

Why the Answer Changes

The search term "6.4 hemi oil capacity" sounds like one fixed number, but the same engine family can appear across different years, vehicle series, emissions packages, and oil-pan configurations. Those differences can change the published refill amount, viscosity, or oil approval.

warningFill note

Add about 0.5 qt less than the listed capacity first, start the engine briefly, wait a few minutes, then verify with the dipstick and top off gradually. Do not rely on a generic engine answer if your vehicle is a different series, chassis-cab, medium-duty, or special-package configuration.

Common Questions

How much oil does a 6.4 Hemi take with filter?

6.4 Hemi oil capacity is 7 qt with filter across the applications listed above. The most common row to start from is 7 qt for 2014-2018 Ram 2500 / 3500 with 6.4L Hemi.

What oil viscosity should I use?

0W-40. Use oil meeting the approval shown for your exact row, and verify the viscosity against your owner manual and oil cap.

What happens if I overfill it?

Overfilling can aerate oil and cause messy crankcase ventilation issues. If the dipstick reads high after a correct warm-up and wait period, drain a small amount and recheck.

How often should I change the oil?

Follow the oil life monitor and owner manual. Heavy towing, idling, dusty work, biodiesel use, and severe service usually call for shorter intervals.

High-Intent Year Pages

2014 6.4 Hemi Oil Capacityarrow_forward 2016 6.4 Hemi Oil Capacityarrow_forward 2019 6.4 Hemi Oil Capacityarrow_forward 2022 6.4 Hemi Oil Capacityarrow_forward 2024 6.4 Hemi Oil Capacityarrow_forward 2025 6.4 Hemi Oil Capacityarrow_forward

Related Ram Pages

Ram Oil Capacity Check by VIN

Source note: Ram 2500/3500 owner manual capacity and fluid specification tables for 6.4L Hemi truck applications. Always verify the exact truck in the owner manual before service.