Your question: Do Hemi engines need premium gas?

What kind of gas does a 5.7 Hemi take?

Turns out it’s also for owners of Fiat Chrysler’s Hemi 5.7-liter V-8, as the company recommends 89-octane fuel for this engine.

Can I run 87 octane in my Hemi?

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!

Can a 5.7 Hemi take regular gas?

The 5.7L requires 89 octane w/ auto trans and 91 octane w/ manual trans per the owner’s manual. You can run 87 octane in your car but the computer will pull timing to compensate for the inevitable spark knock that will result from using a poor grade fuel in a performance car.

Can I run 91 octane in my 5.7 Hemi?

You’ll be fine. It’s designed to run on 87 or 89.

Can I use regular gas instead of premium?

Most cars on the road recommend a standard grade 87 or 89. Premium gas 90-93 is completely okay to put in a standard vehicle. Car experts say there is no risk of damage to a standard car using premium fuel.

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What happens if you accidentally put regular gas instead of premium?

Using regular gas in an engine that requires premium could void your warranty. That is most likely to happen if using regular causes severe engine knock or pinging (premature ignition of the fuel, also known as detonation) that damages the pistons or other engine parts.

Can I put 93 in my 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.

Does the 6.4 Hemi require premium fuel?

Like the 6.1L HEMI engine, the newer 6.4L/392 HEMI engine requires premium fuel for best performance.

What octane does a 6.4 Hemi take?

The Ram manual states that 87 octane is required, but that 89 octane is recommended for optimal performance.

Has Dodge fixed the Hemi tick?

Short answer, no, RAM didn’t fix the tick as far as I have read. Owner options like what has been written in other threads and a bit above abounds but I believe it’s still there.

Can I mix 87 and 89 gas?

You won’t damage your engine at all if you use a higher octane – you’re just wasting money. In North America, service stations blend the higher octane (like a 92 or 93) with a lower octance (87) for the mid-range fuels (89-91) so you’re really not getting your money’s worth.

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