Quick Answer: Do Hemi Engines Need Premium Gas?

What happens if I use regular gas instead of premium?

If you mistakenly fill up with regular fuel, your car’s ECU will adjust engine timing and performance to work with the lower-octane fuel.

In most cases, this is ok for the times when there are no premium pumps around, but it’s not ideal to run the cheapest fuel possible for extended periods of time..

Is the 5.7 L Hemi a good engine?

In general, the third-generation Hemi V8s don’t have any significant design flaws, and the 5.7L version is a solid reliable engine. Many owners are faced with a strange ticking sound in the 5.7L Hemi engine coming from the valvetrain, which, however, does not affect anything.

How many MPG does a 5.7 Hemi get?

2020 Ram 1500 Fuel Economy RatingsEngineCityHighway5.7L HEMI V8 4×215 mpg22 mpg5.7L HEMI V8 4×415 mpg21 mpg5.7L HEMI V8 eTorque 4×217 mpg23 mpg5.7L HEMI V8 eTorque 4×417 mpg22 mpg4 more rows•Feb 10, 2020

Can you use 93 octane in a 5.7 Hemi?

93 octane is likely too much for the Hemi and probably reduces the efficiency of the engine due to the difficulty of fuel detonation in the lower compression engine at the time of the peak power stroke. … Ethanol is a great fuel source, however, not really meant to be run in our motors.

Can I use regular gas in a Hemi engine?

Basically, a fuel’s octane rating is the measure of how much compression a fuel can withstand before igniting. … If you have the HEMI V8 engine, you should use the 89 octane, if you have the base V6 engine, then it is okay to use the 87. Just never use higher than 89!

What type of gas does a Dodge Ram Hemi use?

Mid-grade (89 octane) gas is recommended for the V-8, but Ram says regular can be used.

Can you mix 87 and 89 gas?

Yes. You will not harm your car by mixing different octane grades of the same gasoline providing your car’s engine is designed to run on less than 89 octane fuel and you are not using E85 in a non-E85 compatible engine. … Most gas stations that sell 87, 89 and 91 octane gas use what is called a mixer pump.

How many miles will a 5.7 Hemi last?

5.7 Hemi engines are good for 250-300 000 miles and more if properly cared for and regular maintenance is carried out. Early models suffered from valve seat issues which was rectified after 2008. It’s not uncommon to find high mileage 5.7 Hemi trucks running around today.

Why do they call it a Hemi?

With roots dating back to the early 1950’s, Chrysler’s Hemi engine is known for being a powerhouse. … A Hemi engine is an engine with a hemispherical cylinder head, hence the name. Along with the shape of the cylinder head, the top of the pistons are also dome-shaped in order to fit properly within the cylinder head.

Can I run 87 octane in my Hemi?

All of the new vehicles “CAN” run 87 octane fuel, but it’s not recommended and used repeatedly or long term will eventually result in engine damage. It should not spark-knock, as the ECU (computer) should detect it and detune the ignition accordingly but with commensurate sacrifice in both performance and MPG.

Does premium gas give better mileage?

Premium gas gives you more miles per gallon than regular gas. … In actual fact, you’ll get a greater range of fuel economy between different brands of regular gas, than you will between the same manufacturer’s regular and premium gasses.

How many gallons of gas does a 5.7 Hemi take?

26 gallonsthe 2004 dodge ram 1500 5.7 l hemi will have a gas tank capacity of 26 gallons.

Will 93 octane increase HP?

Premium gas must be, by law, at or above 91 percent, although you do also see 93 percent octane ultra-premium at many stations. … Octane does not offer any better fuel mileage, increase engine horsepower, or make the engine start quicker. Higher octane only reduces the likelihood of engine knock or ping.

Does Dodge Charger need premium gas?

regular unleaded gasoline is used for most of the 2018 dodge charger trims. … the larger, 8 cylinder engine dodge chargers all are recommended to use premium unleaded gasoline only. those trim models are the r/t scatpack, the daytona 392, the srt 392 and the srt hellcat.

Do v8 engines need premium gas?

A vehicle’s owner’s manual specifies the type of fuel required for proper performance, although it might also say that premium fuel is ”recommended. ” … And at General Motors, premium gas is required only in vehicles like the Chevrolet Camaro ZL1 and the Corvette Z06, with their supercharged 6.2-liter V8 engines.

Which gas is better 87 89 or 93?

Regular gas is rated at 87 octane in most states, while premium gas is often rated higher at 91 or 93. Fuel with a higher octane rating can stand up to higher compression before it detonates. Essentially, the higher the octane rating, the lower the likelihood that detonation happens at the wrong time.

What happens if you put 93 instead of 87?

If you usually fill your tank up with 87-octane gasoline and you accidentally put in a higher octane blend (say, 91, 92, or 93), don’t worry. … You may feel a difference in the way the vehicle runs and may notice an improvement in gas mileage, but that’s about all that will happen.

How much horsepower does a 5.7 L v8 Hemi have?

395 horsepower5.7-liter HEMI® V8 – This V8 engine offers the legendary power and capability you’ve come to expect from the iconic HEMI® name. It pushes out an incredible 395 horsepower and a whopping 410 lb-ft of torque.

How often should you change spark plugs in a 5.7 Hemi?

With the HEMI V8 engine, spark plug replacement requirements are based on model year and displacement. The first HEMI engine, the 5.7L, required replacement every 30,000 miles. This interval for this engine continued until 2014. In that model year, the replacement interval was extended to 100,000 miles.

What gas should I use in my 5.7 Hemi?

11 Answers. Regular unleaded should do just fine.

How can I get better gas mileage in my 5.7 Hemi?

How to Increase Mileage on a Dodge RAM 5.7 HEMIChange your RAM’s oil every 3,000 miles or at least every three months. This keeps the engine clean and running well.Get a tune up. … Avoid letting your Doge idle for long periods of time. … Check your tires often. … Avoid accelerating quickly. … Check your air filter.