If you are just like me, you love power and speed. You always love to drive fast, but with the new 6.4 Hemi engine in 2013 Dodge Rams, it is not about speed anymore. It is all about efficiency and getting better gas mileage. We have already seen that if we need to save money on gas, we need to focus on getting more out of our truck’s engine. But, how do we go about doing that? This article will help you find the best ways to improve gas mileage on a 6.4 Hemi engine. Even though some manufacturers have started to shift towards the 5.3 engine, the 6.4 Hemi engine is more popular. When it comes to gas mileage, a lot of people don’t know too much about their engine’s ins and outs. In this article you’ll learn more about ways that you can improve your Hemi’s gas mileage while still enjoying all the power of the 6.4 Hemi engine.

What is a 6.4 Hemi?

There are a lot of people who don’t know what a 6.4 Hemi is. The 6.4 Hemi is simply the 6.4-liter Hemi engine made by Chrysler. As the name “Hemi” implies, this engine has hemispherical combustion chambers, which makes it different from the popular 5.7 L Hemi engine in terms of design but not in terms of power output and performance.

The 6.4 Hemi was first used in 2009 for use in Dodge Ram trucks as well as other Dodge vehicles such as the Challenger, Charger, Durango and Grand Cherokee. It’s also used in SRT Viper and Jeep Grand Cherokee SRT8 models and produces 470 horsepower at 6,000 rpm and 465 lb-ft of torque at 4,300 rpm.

Learn How to Improve Gas Mileage on 6.4 Hemi

They say that a car is just like a human being because it also gets to age. As it ages, you will notice changes in its performance and you can never be sure about how long it can last. Unfortunately, this is part of life and the same thing goes with your cars.

In order to make your car more efficient, you need to do some work and maintenance in it. The 6.4 Hemi is a great engine for towing heavy things but it’s not known for getting great fuel economy. Fortunately you can improve gas mileage on 6.4 hemi by trying some of the tips below.

Engine Oil

One of the best ways to improve gas mileage on 6.4 hemi is to use synthetic oil in your engine. Synthetic oil will lubricate your engine better, keep it cooler and require less horsepower to circulate it through the engine which all improves fuel economy.

Oil Change

Change your oil as often as recommended in your vehicle owner’s manual. Dirty oil puts more drag on your engine and reduces fuel economy while clean oil lubricates better so there’s less drag on moving parts and this reduces heat build up which also helps save fuel. This is the most important thing that you need to do. This will help reduce friction and increase the life of your car’s engine. You should change your oil every 3,000 miles or every three months for best results.

Tire Check-up

Tires that are under-inflated will reduce fuel efficiency by 3 percent. Make sure that your tires have the right tire pressure.

Tune up

A tune up will do wonders for improving gas mileage on 6.4 Hemi. Tune up your vehicle every 12 months or 12 thousand miles as recommended by manufacturers of vehicles with 6.7 Hemi engines. Warm up your engine before driving away from home or work each day by starting it up and then letting it run for about two minutes before shutting off again.

Keep on the run

You’ll get better gas mileage if the engine is held at an even speed, and that means keeping a heavy foot on the gas. This will not be possible if you’re trying to beat traffic. Instead, go with the flow and you’ll see your gas mileage improve.

Efficient Driving Habits

The best way to improve gas mileage in your vehicle is by driving efficiently. Minimize hard acceleration, cruise at a steady pace and avoid jack rabbit starts and stops. This will keep you at the most efficient RPM range for most of your trip and result in better fuel economy.

Weight

One of the easiest ways to improve gas mileage in your vehicle is to reduce the weight it carries. Remove unnecessary items from the vehicle and make sure your tires are properly inflated. Improperly inflated tires can cause drag on your engine.

Driving Regularly

This might sound weird but driving is actually good for the car’s engine and performance. You need to drive your vehicle at least once a week or at least once a month if you are not using it so often to keep it in shape and prevent its components from rusting. When the weather is warm enough, take your vehicle for a drive at least once a week, even if it’s just for 20 minutes down the street. This will allow your gas tank to vent off moisture and prevent condensation from forming in the tank that can lead to corrosion and rust forming in your tank and fuel lines.

Air Filter

A dirty air filter in your 6.4 Hemi will restrict air flow into the combustion chamber, causing an overly rich fuel mixture, which results in poor gas mileage. You may see a larger increase if your current air filter is badly restricted. Install a new performance-type air filter that does not restrict air flow as much as conventional filters do to improve performance and gas mileage even more. If there is something wrong with the air filter, it could affect a vehicle’s fuel economy by 10 percent. So, make sure that the filters in your car are cleaned or replaced on a regular basis so they can efficiently allow air into the engine to burn gas.

No Quick Accelerations

Accelerating slowly as you drive will help save up to 15 percent on fuel consumption. This will also increase the life of your car, reducing wear and tear on the engine, brakes, and tires.

Factors affecting 6.4 Hemi

The 6.4 Hemi is one of the most powerful truck engines out there. It’s also a gas guzzler as a result. But that doesn’t mean you can’t get better mileage from your Hemi truck. We’ve looked at the best ways to improve gas mileage on 6.4 Hemi trucks. They’re all simple and easy to do without sacrificing power. Some major factors are mentioned below.

Fuel

The 6.4 Hemi is not known as the most fuel efficient. If you are looking for better mileage you can make some changes that will help you get there, but it is not going to be the best gas mileage engine out there or anything like that.

Efficiency

The first thing would be getting rid of the MDS which deactivates half the cylinders when not needed which causes your mileage to go down since it takes more energy to start them back up again. This is how the engine gets its efficiency, but if you remove this feature, then you can expect to see worse gas mileage than a regular 6.4L engine.

Power

If you are looking for more power and don’t care about the gas mileage then adding a supercharger will give you a lot more power and torque.

Gas Mileage

If you want better gas mileage then use synthetic oil and change it every 7500 miles instead of every 5k miles. This will keep your MPG up because it is cleaner and works better in cold weather. Also keep your tire pressure at the correct level as they can affect your mileage as well by being under inflated or over inflated.

Here, we will discuss how you can improve the gas mileage in a 6.4 Hemi.

Conclusion

Gas mileage is indeed a complex equation and there are countless factors that determine it. One of the main factors is the tires you choose to put on your vehicle. Since wider tires add weight to your vehicle they also increase drag which causes less gas to get to your engine. This is a discussion about what to do to improve my gas mileage, not why the changes made have helped. Some people may have had success from trying multiple things and changing the order of what they do. I noticed an improvement after working on the air filter and changing tires. The MOPAR CAI is part of another test which will help determine if it’s needed for your vehicle or not.

Resource;

https://www.investopedia.com/financial-edge/0211/9-easy-ways-to-increase-your-gas-mileage.aspx