Register Now


Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

Add post

You must login to add post .

Add question

6.4 Hemi Oil Type

6.4 Hemi Oil Type

The 6.4L Hemi engine is a powerful and robust engine developed by Chrysler’s Street and Racing Technology (SRT) division. It was introduced in 2011 and is part of the third generation of the Hemi V8 engine family. It has a displacement of 6.4 liters (392 cubic inches), a 90-degree V8 configuration, and a two-valve-per-cylinder design. It is equipped with advanced technologies such as variable valve timing and cylinder deactivation, which help it deliver impressive horsepower and torque while maintaining reasonable fuel efficiency. This engine can be found in various Dodge and Ram vehicles, including the Charger, Challenger, and Ram 2500/3500 trucks.

Choosing the right oil type for your 6.4L Hemi engine is crucial for maintaining its performance, efficiency, and longevity. Using the manufacturer-recommended oil ensures that your engine remains well-lubricated, minimizes wear, and operates at optimal temperatures.

This article will discuss the recommended oil type for the 6.4L Hemi engine, viscosity, capacity, and change intervals. We will also cover the importance of using the right oil and adhering to regular maintenance schedules. By following these guidelines, you will ensure that your 6.4L Hemi engine continues to deliver outstanding performance and remains reliable for years to come.

What Oil Does a 6.4 Hemi Take?

The factory-installed engine oil in the 6.4L Hemi is a high-quality, energy-conserving lubricant. This oil is specifically designed to provide excellent protection and performance for the engine under various operating conditions.

For the 6.4L Hemi, the manufacturer recommends using only full synthetic 0W-40 engine oils that meet the American Petroleum Institute (API) categories of SN. Full synthetic oils offer improved performance, protection, and fuel efficiency compared to conventional oils, making them ideal for the high-performance nature of the 6.4L Hemi engine.

What oil does a 392 Hemi take?

The manufacturer recommends using Pennzoil Ultra™ 0W-40 or an equivalent MOPAR® engine oil meeting the requirements of FCA US Material Standard MS-12633 for use in all operating temperatures. These oils are specifically formulated to provide the best possible protection and performance for your 6.4L Hemi engine. When selecting an oil, ensure it meets the recommended specifications to ensure optimal engine performance and longevity.

Oil Viscosity and Climate Considerations

The recommended oil viscosity for the 6.4L Hemi engine is 0W-40. Viscosity is a measure of an oil’s resistance to flow and is crucial for ensuring proper lubrication and protection of the engine components. The 0W-40 viscosity rating means that the oil will flow easily at low temperatures (0W) while still providing adequate protection at higher operating temperatures (40).

Climate plays a significant role in determining the optimal oil viscosity for your engine. In colder climates, a lower viscosity oil, such as 0W-40, helps the engine start more easily and provides better protection during cold starts. In warmer climates, a higher viscosity oil may be necessary to maintain proper lubrication and protection at higher operating temperatures.

However, the recommended 0W-40 viscosity for the 6.4L Hemi engine is designed to provide optimal performance and protection across a wide range of temperatures and operating conditions.

The oil filler cap on your 6.4L Hemi engine is a helpful reference for the recommended oil viscosity. The cap displays the suggested viscosity rating, which, in this case, is 0W-40. Always refer to your engine oil filler cap or your owner’s manual for the correct oil viscosity recommendation for your specific engine.

6.4L Engine Oil Capacity with Filter

The 6.4L Hemi engine has an oil capacity of 7 quarts (6.6 liters) when changing the oil and filter. It’s essential to use the correct amount of oil to ensure proper engine lubrication and maintain optimal performance. Be sure to consult your owner’s manual for the specific oil capacity of your engine before refilling.

MOPAR® engine oil filters are recommended for use with the 6.4L Hemi engine due to their high-quality construction and compatibility with the engine’s design. These filters are engineered to meet the performance requirements of your engine and provide superior filtration, ensuring that contaminants are effectively removed from the oil.

  • Mopar OEM part that fits your specific vehicle
  • Part Number: 04884899AC
  • Manufactured to meet specifications for fit, form, and function

Using a MOPAR® oil filter helps protect your engine from premature wear and damage while maintaining optimal performance and efficiency. It is always advisable to use the manufacturer-recommended filters for your vehicle to ensure the best possible protection and reliability.

Understanding API Categories and FCA Material Standards

API category SN is a designation provided by the American Petroleum Institute (API) to identify engine oils that meet specific performance and protection standards. The SN category is designed for engines manufactured in 2010 and later, with a focus on improved fuel economy, better high-temperature deposit protection, and increased compatibility with emission control systems. Choosing an oil that meets the API SN category ensures that your 6.4L Hemi engine receives the protection and performance it requires.

FCA US Material Standard MS-12633 is a specification set by Fiat Chrysler Automobiles (FCA) for the engine oils used in their vehicles. This standard ensures that the engine oil is of high quality and provides the necessary protection and performance for FCA engines, including the 6.4L Hemi. Engine oils meeting this standard have undergone rigorous testing and have been proven to be compatible with the specific requirements of FCA engines.

Adhering to API categories and FCA material standards is crucial for maintaining the performance and longevity of your 6.4L Hemi engine. Using engine oils that meet these standards ensures that your engine receives the proper protection against wear, deposits, and sludge formation. Additionally, these oils help maintain fuel efficiency, reduce emissions, and provide optimal performance under various operating conditions. Always choose engine oils that meet the recommended API and FCA standards to ensure the best possible care for your 6.4L Hemi engine.

Oil Consumption During Engine Break-in

It is common for a new engine to consume some oil during its first few thousand miles of operation. This is a normal part of the break-in process as the engine components settle and wear patterns are established. As the engine components wear and seat together, oil consumption should decrease over time.

Several factors can affect oil consumption during the break-in period, including driving habits, engine load, and operating temperature. Aggressive driving or frequent towing can increase oil consumption, while gentler driving habits and lighter loads can reduce it. It’s essential to monitor your oil level regularly and top off as needed to ensure proper lubrication and engine protection during this crucial period.

Regularly checking your engine oil level during the break-in period is crucial to identify and address any potential issues. If you notice excessive oil consumption or a significant drop in the oil level, it’s essential to consult with a qualified technician to determine the cause and take appropriate action. By closely monitoring your engine’s oil consumption and addressing any concerns promptly, you can help ensure the longevity and performance of your 6.4L Hemi engine.

Factors Affecting Oil Change Intervals

Various factors influence the frequency at which you should change the oil in your 6.4L Hemi engine, including driving conditions, driving habits, and the type of oil used. Regular oil changes are essential to maintain your engine’s performance and longevity.

For the 6.4L Hemi engine, it’s recommended that you change the oil under no circumstances exceeding 8,000 miles (13,000 km), twelve months, or 350 hours of engine run time, whichever comes first. Sticking to this schedule ensures that your engine remains well-lubricated and protected, maximizing its performance and lifespan.

For fleet customers or those who spend significant time idling, monitoring engine run time is crucial in determining when to change the oil. The 350 hours of engine run or idle time should not be exceeded before performing an oil change. By keeping track of engine run time, fleet customers can help maintain their 6.4L Hemi engines’ performance and extend their service life.

Can I Run 5w40 In My 6.4 Hemi?

While the manufacturer specifically recommends Pennzoil Ultra™ 0W-40 or equivalent MOPAR® engine oil meeting the FCA US Material Standard MS-12633 for the 6.4L Hemi, using 5W-40 could be a viable option if the recommended oil is not available.

According to a post on, using 5w40 oil in your 6.4 Hemi engine is safe. The post explains that the engine runs a higher duty cycle, but none that would require a 40wt oil for heavily loaded parts like a charged engine or high-pressure diesel engine. The 0W is for cold temp circulation, and a 5W synthetic is preferred for that – it doesn’t have the evaporative volatility or sheardown of VII additives.


Proper oil maintenance is crucial for ensuring the optimal performance and longevity of your 6.4L Hemi engine. Using the correct oil type and viscosity and adhering to recommended change intervals protects your engine from wear, maintains fuel efficiency, and contributes to its overall performance.

To achieve the best results, always follow the guidelines set forth in your owner’s manual regarding the recommended oil type, viscosity, and change intervals for your 6.4L Hemi engine. Adhering to these recommendations ensures your engine remains well-lubricated, protected, and running at its best, delivering a satisfying and reliable driving experience.

Additional Resources

  1. Official Mopar Website:
  2. Pennzoil Ultra™ 0W-40 Product Information:
  3. FCA US Material Standards:


Last update on 2024-06-18 / Affiliate links / Images from Amazon Product Advertising API

About Dan Hoffman

Dan is a co-founder of Engineswork. He knows everything about internal combustion engines. Ask your questions in comments down below this article - he will be glad to help you anytime.

Leave a reply

By commenting, you agree to the Terms of Service and Privacy Policy.