Complete Oil Specifications
Your 2023 RAM 1500 5.7L HEMI V8 requires 5W-20 synthetic blend or full synthetic oil meeting Chrysler MS-6395. This standard is not negotiable — the HEMI’s Multi-Displacement System (MDS) is hydraulically controlled by engine oil and requires the specific flow characteristics of MS-6395 certified oil.
Quick Reference
| Specification | Value |
|---|---|
| Viscosity | 5W-20 |
| Chrysler Standard | MS-6395 |
| API Rating | Chrysler MS-6395 / API SN Plus |
| Capacity (with filter) | 7.0 quarts |
| Oil Filter | Mopar MO-349 |
| Normal Interval | max 8,000 miles or 1 year |
Why MS-6395 5W-20 is Non-Negotiable for the HEMI
The 5.7L HEMI EXH uses MDS (Multi-Displacement System) to shut down four of eight cylinders under light-load cruising. MDS operation is entirely hydraulic — solenoid valves control oil pressure to lock or unlock the valve lifters that shut cylinders down. Chrysler MS-6395 specifies the exact oil viscosity, additive chemistry, and flow rate required for MDS to engage and disengage reliably.
Using non-MS-6395 oil or the wrong viscosity causes:
- ❌ MDS failure codes (P3400, P3408) and Check Engine Light
- ❌ HEMI tick — a well-known symptom of valve lifter noise from incorrect oil pressure
- ❌ Reduced fuel economy as MDS fails to activate during highway cruising
RAM-Approved Oil Brands
-
✅ Pennzoil Platinum Full Synthetic 5W-20
-
✅ Mobil 1 Full Synthetic 5W-20
-
✅ Castrol GTX Magnatec Full Synthetic 5W-20
-
✅ Valvoline Advanced Full Synthetic 5W-20
-
✅ Royal Purple Full Synthetic 5W-20
Check the back of the bottle for “Chrysler MS-6395”. This standard is printed on approved products — if it’s missing, do not use the oil regardless of API rating.
Severe Service Check
The Oil Life Monitor will reduce intervals automatically. Expect changes around 4,000 miles if you:
- Tow trailers at or near the 1500’s rated capacity consistently
- Haul maximum payload regularly
- Drive in sustained stop-and-go traffic in high heat
- Idle for extended periods (construction or work site use)
Installation Details
Drain Plug Torque: 25 ft-lbs
OEM Filter: Mopar MO-349
Aftermarket Filters:
-
Fram PH16
-
WIX 57356
-
K&N HP-6011
Pro Tip: The HEMI’s oil filter is positioned above the passenger-side front axle, behind the engine. Use a plastic bag or form-a-funnel over the filter housing to catch the oil that spills when removing — the axle and differential below can collect oil and cause a burning smell if not cleaned.
FAQs
What oil does a 2023 RAM 1500 5.7L HEMI take? SAE 5W-20 oil meeting Chrysler MS-6395.
How many quarts does the 5.7 HEMI hold? 7.0 quarts with a new filter.
Can I use 0W-20 instead of 5W-20? Ram officially recommends 5W-20 to ensure proper MDS function. 0W-20 may be used in consistently sub-zero climates, but 5W-20 is the correct specification for standard operating conditions.
What is the HEMI tick and does oil cause it? HEMI tick is a valve lifter noise common when using incorrect oil viscosity or oil without the MS-6395 certification. Using the correct 5W-20 MS-6395 oil and maintaining change intervals eliminates it in most cases.
How often should I change the oil? Follow the Oil Life Monitor. Do not exceed 8,000 miles or 12 months, regardless of what the monitor shows.
Need these specs on your phone? Download OilFinderPro app for offline access and oil change reminders.
Last verified: 2026-04-26 | Source: 2023 Ram 1500 Owner’s Manual