The oil you use for a RAM 1500 depends on the engine and model year. Most gasoline RAM 1500s run on full-synthetic oil in the 0W-20 or 5W-20 range, while the EcoDiesel option uses 5W-40. Always verify with the owner's manual or the oil fill cap on your engine.
Understanding which oil to use can be confusing because the RAM 1500 comes with several powertrains. This guide outlines the typical oil requirements for the common gasoline engines and the EcoDiesel, with practical tips to confirm the exact specification for your vehicle.
Engine options and oil requirements
3.6L Pentastar V6 (gasoline)
Typically uses a full-synthetic 0W-20 engine oil. Oils should meet Mopar MS-6395 specification (or be API SN or newer, depending on year). Using synthetic oil helps with cold starts and fuel efficiency.
5.7L HEMI V8
Typically uses a full-synthetic 5W-20 engine oil. Oils should meet Mopar MS-6395 specification or an equivalent. Synthetic oil provides robust high-temperature protection for towing and heavy-duty use.
3.0L EcoDiesel V6
Typically uses a full-synthetic 5W-40 engine oil. Oils should meet API CK-4 (or FA-4) and Mopar specifications where applicable. Diesel engines require higher-performance oil to manage soot and wear.
Quick reference by engine
Use this concise guide to confirm the standard oil for your RAM 1500’s engine. Exact year-to-year requirements can vary, so always verify in the manual.
- 3.6L Pentastar V6 (gas): 0W-20 full synthetic (Mopar MS-6395).
- 5.7L HEMI V8: 5W-20 full synthetic (Mopar MS-6395).
- 3.0L EcoDiesel: 5W-40 full synthetic (API CK-4/FA-4).
Always check your owner's manual or the oil fill cap for the exact viscosity and specification for your vehicle. If in doubt, contact a dealer or qualified technician to confirm the correct oil grade for your VIN and climate.
Choosing the right oil: key considerations
Before shopping for oil, consider these factors to ensure you select the right product for your RAM 1500.
- Viscosity by engine: 0W-20 or 5W-20 for most gas engines; 5W-40 for EcoDiesel.
- Oil specification: Oils should meet Mopar MS-6395 for gasoline engines and API CK-4/FA-4 for the EcoDiesel.
- Oil type: Full synthetic is typically recommended for modern RAM 1500 engines to maximize protection and interval length.
After selecting the oil, follow the maintenance schedule in your manual and adhere to any warranty requirements. If you plan to operate in extreme temperatures or under heavy towing, you may need to adjust the oil grade or interval accordingly.
Summary
For most RAM 1500 models with gasoline powertrains, the standard choice is a full-synthetic oil in the 0W-20 or 5W-20 range, with the EcoDiesel requiring 5W-40. Always use oils that meet Mopar MS-6395 (gas) or API CK-4/FA-4 (diesel) specifications and verify the exact requirement for your year and engine from the owner's manual or dealership. Proper oil selection protects engine longevity and helps maintain warranty coverage.