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What oil does Ram use from the factory?

Ram trucks are typically filled at the factory with synthetic engine oil, but the exact grade depends on the engine. In modern Ram gasoline engines, the factory fill is 5W-20; the EcoDiesel uses 5W-40. Always confirm with your year/model manual or under-hood sticker.


Gasoline engines


The two most common gasoline engines in current Ram pickups are the 3.6L Pentastar V6 and the 5.7L Hemi V8. The factory-fill oil grade for both is 5W-20 full synthetic, selected to balance protection with fuel economy.


3.6L Pentastar V6


Factory fill: 5W-20 full synthetic oil. This grade supports cold-weather start-up and overall engine protection as specified by Ram for the 3.6L engine.


5.7L Hemi V8


Factory fill: 5W-20 full synthetic oil. The 5W-20 grade is commonly used for the Hemi in Ram trucks as the standard factory fill.


Note: Model-year and regional variations can occur, so always verify with the owner’s manual or the oil-fill sticker under the hood to ensure you’re using the correct specification for your vehicle.


Diesel option


The EcoDiesel option in Ram trucks uses a different oil grade tailored to diesel engines and emissions requirements.



  • 3.0L EcoDiesel: 5W-40 full synthetic oil (factory fill).


As with gasoline engines, exact specifications can vary by year and configuration. Always confirm with your manual or hood sticker for your specific Ram model.


How to confirm the exact factory fill for your Ram


To pinpoint the correct oil for your truck, use these quick checks:



  1. Open your owner’s manual and look up the recommended engine oil section for your engine and model year.

  2. Check the oil fill cap on the engine, which sometimes lists the grade (for example, 5W-20).

  3. Examine the under-hood sticker near the engine bay; it typically reiterates the correct viscosity and specification.

  4. If buying a used Ram, verify the factory fill with the dealer or review the vehicle’s maintenance history to confirm the spec for that engine and year.


By following these steps, you can be confident you’re using the factory-specified oil for your Ram and maintain warranty and engine longevity.


Summary


In brief, Ram’s factory oil fills are generally 5W-20 full synthetic for gasoline engines (3.6L Pentastar and 5.7L Hemi) and 5W-40 full synthetic for the EcoDiesel 3.0L. Always verify with the owner’s manual or hood sticker, as engine variants by year and region may differ. Using the correct oil helps ensure optimal protection and fuel efficiency.

What oil does Dodge use from the factory?


The 5.7 Hemi engines require a 5W20 synthetic oil, and Mopar 5W20 synthetic oil should be used for maximum protection and performance. For Dodge vehicles, the dealership typically uses oil from Pennzoil or Shell, both of which are reliable brands that meet the standards set forth by Mopar.



Does the 5.7 Hemi use synthetic oil?


The best oil to put in your 5.7. Hemi is a full synthetic 5W30. Oil in cold climates you can opt for a 0W30 0w30 flows better on a cold winter. Start and it also has the same hot oil protection as



What brand of oil does Dodge Ram use?


Mopar
RAM recommends its Mopar brand of oil, called MaxPro, for your RAM 1500. Mopar meets RAM's high standards for quality to keep your engine in top condition for as long as you own your truck.



Does RAM use synthetic oil from the factory?


Again, there's no manufacturer we're aware of that makes this recommendation. Chrysler, Jeep, Dodge, Ram, Mercedes-Benz, Porsche, Corvette, Volkswagen, Hyundai and many other manufacturers' vehicles come from the factory with synthetic oil. Myth: Using a synthetic oil voids a car's warranty.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.