The RAM 1500 with the 5.7-liter HEMI engine standardly uses a 5W-20 full-synthetic motor oil that meets Chrysler’s MS-6395 specification, with an oil capacity of about 7 quarts (including the filter). Always consult your owner’s manual for year-specific guidance.
Oil grade and specification
Here is the core guidance drivers should follow when selecting oil for the 5.7 HEMI. The aim is to match viscosity, chemistry, and engine tolerances.
Note: The figures below reflect typical guidance for RAM 1500 5.7 HEMI models. Always consult your year’s manual or dealer for any deviations.
- Viscosity: 5W-20 synthetic motor oil (standard for most model years)
- Specification: Chrysler MS-6395 (also labeled Mopar MS-6395) to ensure compatibility with the engine’s tolerances and warranty requirements
- Oil type: Full synthetic oil (recommended for best protection; synthetic blends may be acceptable in some years but not preferred)
Conclusion: Use a 5W-20 full synthetic oil that meets MS-6395 to align with FCA specifications and the engine design.
Oil capacity and change intervals
Understanding the engine’s capacity and maintenance schedule helps keep the HEMI healthy and compliant with service recommendations. The standard fill volume and interval benchmarks are widely cited across RAM literature and manuals.
Before listing these details, note that actual figures can vary slightly by model year and whether the oil change includes a separate filter.
- Oil capacity: approximately 7 quarts (with filter) for most 5.7 HEMI RAM 1500 engines
- Change interval under normal driving with synthetic oil: typically about every 7,500 miles or 12 months, whichever comes first
- Change interval for severe service or when using conventional oil: more frequent, commonly 3,000–5,000 miles or 4–6 months
Conclusion: Stick to the recommended interval for your oil type and driving conditions, and always verify with the owner’s manual or dealer for your specific year.
Climate and year-specific notes
Vehicle manuals sometimes adjust recommended viscosity for extreme temperatures or newer engine calibrations. While 5W-20 is the standard, some model years may permit alternate viscosities such as 0W-20 or 5W-30 under certain conditions. Always confirm the exact specification for your year and VIN with the owner’s manual or your dealer.
Summary: For a RAM 1500 with a 5.7 HEMI, the baseline recommendation is 5W-20 full-synthetic oil meeting Chrysler MS-6395, about 7 quarts, with maintenance intervals of roughly 7,500 miles in normal service. Verify year-specific guidance in the owner's manual and adjust for climate and driving conditions.