Yes, but only if your model year and climate are approved by the manufacturer; otherwise use the recommended viscosity (typically 5W-20 or 5W-30).
The 5.7-liter Hemi, used across Dodge, Ram, Chrysler, and Jeep vehicles, relies on a specific set of oil recommendations. While 0W-20 can offer easier cold starts and potential fuel economy benefits, it isn’t universally approved for every 5.7 Hemi. This article explains how to determine if 0W-20 is appropriate for your engine and what steps to take if you’re considering a switch.
What the rules say
Viscosity recommendations vary by model year and climate; the owner’s manual is the authoritative source. Many 5.7 Hemi applications specify 5W-20 or 5W-30, with some newer or region-specific versions listing 0W-20 as acceptable. If your manual does not mention 0W-20, do not use it unless a reputable dealer or Mopar service bulletin confirms approval.
How to verify acceptance of 0W-20
To verify, consult the owner’s manual and any official Mopar/Chrysler service bulletins for your exact model and year. On the oil label, look for the right viscosity plus approval codes (for example API SP or SN, ILSAC GF-5 or GF-6) and, where applicable, Mopar MS-6395. These approvals indicate the oil meets the engine’s requirements.
To keep this practical, here is a quick checklist you can follow before deciding to use 0W-20.
- Consult the owner's manual for the acceptable viscosity range and required specifications.
- Check for official Mopar approvals or dealer bulletins specific to your model/year.
- Choose a 0W-20 oil that bears API SP/SN, ILSAC GF-5 or GF-6, and Mopar MS-6395 where applicable.
- Ensure the oil change interval and filter are appropriate for synthetic oils.
Conclusion of the checklist: If your manual explicitly approves 0W-20 (or a dealer confirms), you may use it; otherwise, use the manufacturer-recommended viscosity.
Practical considerations
Why owners consider 0W-20: improved cold-start performance and potential fuel economy. Why some owners avoid it: once the engine is warmed, the oil is thinner and may offer less film strength under heavy loads or extreme temperatures, particularly if the engine is older or has high mileage. Always prefer oils that meet the engine’s spec, and never mix viscosities to try to reach a different thickness. For warranty and long-term reliability, follow the OEM’s recommended viscosity unless a dealer specifically approves an alternative.
Summary
The compatibility of 0W-20 with a 5.7 Hemi depends on the vehicle’s year and the manufacturer’s approval. Check the owner’s manual, any official service bulletins, and the oil’s labeling for the correct approvals. If 0W-20 is approved for your configuration, you can use it; if not, stick with the recommended viscosity (commonly 5W-20 or 5W-30). Always choose a high-quality oil that meets the required specifications and follow recommended oil-change intervals.
What is the best oil to run in a 5.7 HEMI engine?
SAE 5W-20 full synthetic oil
Use the SAE 5W-20 full synthetic oil if your truck has the 5.7L V8 HEMI gasoline engine. The eTorque system will also need lubrication on the front axle and rear differentials with 5W-20 motor oil for best results as you drive to the job site or when hauling a trailer behind you.
Can you use 0W-20 in a 5.7 HEMI?
I noticed something interesting with the 2025 Durango running the 5.7L HEMI V8 — it's now spec'd to use 0W- 20 oil, while the same 5.7L HEMI in Ram 1500 trucks has traditionally run 5W-20.
What happens if I put 0W-20 instead of 5W-20?
While 0W-20 flows better cold, it may cause oil pressure warnings, increased consumption, and accelerated wear in engines not designed for it. Some high-mileage engines successfully use 5W-20 as a compromise, but never use 0W-20 unless specifically approved by the manufacturer through technical bulletins.
How to get rid of lifter tick 5.7 HEMI?
How to Fix Hemi Tick
- Check Oil: Make sure the oil level is full and the oil is clean. If it's dirty, change the oil and filter.
- Replace the Bad Lifter: When a lifter's seal is shot, it won't hold oil. You need to replace that lifter.
- Reassemble: Put everything back together with new gaskets.