For a 2004 Ram 1500 with the 5.7 HEMI, use engine oil that is 5W-20 or 5W-30 and meets Chrysler’s MS-6395 specification. In most conditions, 5W-20 is the default; 5W-30 is preferable in hot climates or when towing. The engine holds about 7 quarts of oil with a filter.
Viscosity, specifications and capacity
The following guidance covers the viscosities that work, the required specification, and how much oil your V8 engine typically needs.
- Viscosities you can use: 5W-20 (default/most common) or 5W-30 (alternative for hot climates or towing).
- Oil specification: Must meet Mopar MS-6395 and an appropriate API service rating (such as SM or newer).
- Oil capacity: Approximately 7 quarts with a filter; exact capacity can vary slightly by engine and filter size.
Bottom line: The Ram’s 5.7 HEMI accommodates either 5W-20 or 5W-30, provided the oil meets MS-6395 and API standards, with about 7 quarts required per change.
Brand options and maintenance strategy
When choosing oil, you can opt for conventional or synthetic, but either must comply with the MS-6395 spec. This guide outlines practical options and maintenance timing.
- Conventional 5W-20 or 5W-30 that meets MS-6395 and API ratings; available from many brands.
- Synthetic or synthetic-blend 5W-20 or 5W-30 that meets MS-6395; typically offers better protection and longer drain intervals.
- Oil-change cadence: roughly every 3,000 miles with conventional oil; about every 5,000–7,500 miles with synthetic, depending on driving conditions and manufacturer guidance.
Conclusion: Brand choice is flexible; key factors are the correct viscosity (5W-20 or 5W-30), MS-6395/API compliance, and sensible drain intervals based on how you drive.
Practical reminders for owners
Regularly check the dipstick, replace the oil filter at each change, avoid mixing different oils, and follow the vehicle’s manual for any model-specific notes. If you tow frequently or drive in extreme heat, 5W-30 with a quality synthetic can provide added protection.
Summary
For a 2004 Dodge RAM 1500 with the 5.7 HEMI, use 5W-20 or 5W-30 engine oil that meets Chrysler MS-6395 and API standards. Expect a capacity of about 7 quarts per change, and you may choose conventional or synthetic oil depending on your climate and towing needs. Always refer to the owner’s manual or the door jamb sticker for the exact specification and adhere to a reasonable maintenance schedule based on your driving conditions.