The 2008 Dodge Ram 4.7L V8 generally uses 5W-20 motor oil as the default viscosity, with 5W-30 acceptable in hot weather or under severe service. Both conventional and synthetic oils are usable, provided they meet the engine’s certification requirements.
Oil specifications for the 2008 Dodge Ram 4.7
The following guidance covers the viscosity options and the standards you should look for when selecting oil for the 4.7L PowerTech engine.
Viscosity options
Below are the viscosity choices commonly permitted for day-to-day operation of the 4.7L engine. Climate, workload, and driving style influence the optimal pick.
- 5W-20: The default recommended viscosity for normal temperature operation.
- 5W-30: Acceptable in hot climates, heavy towing, or severe service where extra oil film strength is beneficial.
Conclusion: For most driving conditions, 5W-20 is the standard choice; 5W-30 can be used when conditions warrant it. Always verify with your owner's manual or a dealer for your specific vehicle.
Oil type and approvals
In addition to viscosity, ensure the oil meets Chrysler/Mopar specifications and API certification. The engine commonly requires oils that meet the MS-6395 specification, and you can choose conventional or full synthetic as part of your maintenance plan.
- Conventional or synthetic oil is acceptable as long as it meets MS-6395 (Chrysler) specification and API service category (SM, SL, SN, or newer).
- Look for products labeled as meeting or exceeding MS-6395 for the 4.7L engine.
Conclusion: Select an oil that matches the recommended viscosity and carries the appropriate MS-6395/API certification, then follow the recommended change interval.
Other considerations
Additional tips to help choose the right oil and maintain engine health.
- Oil-change interval: Typically around 3,000–5,000 miles for conventional oil and up to 7,500–10,000 miles for synthetic, depending on driving conditions. Check the owner's manual for exact guidance.
- Temperature considerations: 5W-20 remains suitable in cold-to-moderate climates; 5W-30 may offer extra protection in hot climates or under heavy load.
Conclusion: Align your oil choice with the manual’s specifications and your climate, and follow the recommended service intervals to keep the 4.7L running smoothly.
Summary
For the 2008 Dodge Ram 4.7L, use 5W-20 as the default viscosity, with 5W-30 as an alternative under hot or heavily loaded conditions. Oils can be conventional or synthetic as long as they meet Chrysler MS-6395 and API certification. Always consult the owner's manual or a trusted dealer to confirm the exact specification for your vehicle and climate, and adhere to the recommended oil-change intervals.