I've been driving the same truck for the last 14 years and I always use 87 Oct . yesterday I used 93 octain. And yes there is a difference I can tell a huge. Increase in power I know this truck like the back of my hand.

Appreciate that experiment man. Getting one tommorow and this saved me from going to has up and run all the variables in my head. Appreciate you wasting money, time, and gas for other charger lovers!

That in my humble opinion was a very well done test, especially for not being in a controlled environment etc etc. And thank you for not throwing a whole lot of personal bias into the mix, that was refreshing as well. I for one would really like to see a test with the 5.7 between 87 octane, and the 93 octane. Overall gas mileage for a tank, and your tests from 40 to 80 and maybe a few more 0 to 60 and I would love to see the 40 to 80 in third gear, I think it would put the engine more in it's comfort zone, where it's designed to operate with a little performance. I mean let's face it Mopar turned a truck hemi into a really nice small block with a lot of horses for its size in 2011. Not to mention how much performance you can actually get out of one of these if you want. Anyway thank you, great video and now a subscriber.

Love your vids man. You're very knowledgeable. Huge fan here!

Just bought my '14 HEMI yesterday man! Helpful vid. Thanks dude!

Thank you so much for this !!!! It was very helpful.

Good video and thanks for taking the time out to do this research without using a dyno....kudos...👍🏾

Hey! I really enjoy your videos and am considering getting an R/T myself real soon. I do think you should mention(in the description) what mods you have done to the vehicle though, because the mods could affect whether or not your motor will enjoy the higher octane.

This has been a great video since I go back and forth between 89 and 93. Now the factory tune requires 89, so I'm sure they have some sort of rhyme /reason for that. Anyways - For what it's worth, it's a breath of fresh air to finally read comments without interjections from Internet trolls. That in itself was worth reading all the responses. Nice!

Octane # is not about power or energy in fuel, its more about when it will detonate. Thats why engines with higher compression ratio need higher octane fuel. afair - alcohol based fuels have octane numbers more than 100, lol, but you will get worse mpg ( less energy per gallon, basically ) with it.

Damn I wish gas was that cheap now. 2.11 for 93. 😂😂😂 it's like over $3 where I'm at now. Lol

I've always been big on using 93 Octane even though it hurts the pocket book, but watching this I will definitely look into 89 octane. Thanks, good job on getting those numbers!

That was a good video. The high octane rating used to be mandatory for a high compression engine to keep from detonating. It is no longer the case. The Ford 5.0 has an engine management system that is off the charts. It has an 11 to 1 compression ratio, but can still run on 87 octane. It does drop in HP, but the .60 cents a gallon you save is worth it.

Great video, great car! I have been driving around the 2015 charger v6 since last May and I absolutely love it. I can't wait until I graduate university and et the 2015 R/T. I have couple comments on the video regarding the testing, some stuff that you could have done in a better way. For instance when you filled it with 93, you filled it all the way to the max you mentioned, but you only put 16 gallons the first run. That could account for some extra weight. Second, I think it would be a better test if you were on a straight way rather going up or downhill. These are not major stuff, but these could make a small difference when testing! Overall great video, can't say I'm surprised with the results though! Keep em comin (Y)

I will just stick with 89 the recommended fuel. The 5.7 engine factory tuning does not have much flexibility for other grades of fuel. The knock sensors are heavily used running 87 when the engine is under load, with less power being the result, but most drivers will not notice that. For 93 octane with an aftermarket tune you can make more power, but with a factory tune the difference is not noticeable.

thanks for the video. I have a 2015 ram 1500 5.7 hemi. I wonder if the octane effects the gas mileage

Wish you compared 87 to 89 to see why they recommend 89.

I had a mazda before my challenger, noticed even though mazda claimed 87 was best that 89 gave me 10mpg better gas mileage, and that's not even a joke. It shocked even the mazda dealership. I tested the same thing in my v6 challenger, and get at least 5mpg better on 89 plus my engine sounds like its running smoother, i was getting a lot of what sounded like knocking on 87 like the owners manual said so again they should change it to ask for 89 due to just offering better gas mileage and a smoother running car. I would also like to add that in the future i do hope to add a RIPP Supercharger to my challenger before it gets too high in miles. Should make it a lot more fun to drive.

hey man, really liked the review, seemed pretty well thought out. 2 things though....was your tire pressure in all tires the same on both days? idk if you know this or not but they say that a higher octane won't make a difference until you've put at least 3 or 4 tanks of it through your engine over time. thoughts/replies? thanks man!

Dude i love your vids, they're very informative for aspiring Charger owners like me. I'm going to be so sad when you sell it :(

He looks like a young Abe Lincoln😂

Good data, love seeing someone in CStat

You need a dyno to really test the difference

I run 89 in my 5.7 nice video thanks for posting

great video bro ! just what I was looking for, I use only 89 cause the 5.7 is not a high compression engine , 10.5:1 I think, but I was curious to see the difference between 89 and 93, thanks and keep it up man with the charger videos,, some good videos can be a camaro vs the charger or a 392 or a 5.0,

(SUV) Chevy Trailblazer 2002 LTZ 4WD: When I go on road trips i use plus(89) when i do city i use premium(93) I notice no difference HWY with plus or premium i do notice it with regular burns faster has terrible smell from muffler. Believe it or not... 20" rims GoodYear Tires All Terrain, Airaid Air cool Filter, Throttle Body Spray cleaning and Marvel Mystery OIL Spiked My performance and gas mileage by... 35% So get to it.

This is great, thanks! I have the same vehicle, wondered the same thing. My car is in for a partial rebuild under warranty, all he said was something about the cam, I thought the cylinder head was being rebuilt, either way it started to misfire on the second cylinder and when they went in, it's an $1800 job but it is covered under the powertrain warranty. I never get gas from anywhere but Chevron, Costco or Tom Thumb, interestingly, I started having problems with my old Charger after I moved here and started using Tom Thumb gas. The Costco gas 87 is OK, but I wish they had 91, my car never runs that great after a Costco fill up. My sensitive flower of a Hemi is happiest with Shell, even 87. Oh, I'm in Dallas and I was told to fill up at the station near the Winstar casino in OK, everyone goes on empty so they can fill up there something about the gas not having additives. It's expensive but wow does my car love this gas! Great mileage, smooth as silk, lots of power. Weird, huh! Thoughts?

Do the same test with the 93 octane and add a bottle of the octane booster and see how that compares. Good job wit the vid

did you still have fuel in the fuel line when did the test? Or did you drive a few miles to make sure you were completely running the new fuel?

Now if he got a 93 octane tune he would be blown away ! Can highly recommend hemi fever 👍

yes it does. on my focus ive tested 87-91-e85 the higher the octane, the higher the power increase beacause it allows the engine to make more power. the higher the octane rating the less preignition

Dude your Murdered R/T looks pretty brilliant. What exhaust have you got?

The higher octane is definitely a more completely burning cleaner fuel. Which is good for your valves, pistons and the environment .

Well, I like the video. like someone else stated it would be nice to know the difference between 87, 89, and 93. Like the video though. Keep up the videos. :)

So should I not bother putting 91 + an octane booster for my trip down to Phoenix AZ? I was only considering it because my 1993 Geo Prizm LSi 1.6L might need come help coming back up that hill lol.

what state do you live in considering it was like 2.11 for a gallon of 93.

i ordered some headers and a mid pipe with mpt tune. Do i have to put the 93 octane first and then load up the tune? i usually put 89 on my car but since im getting a 93 tune do i have to empty out the 89, put the 93 in,and then load up the 93 tune? this is going to be my first time ever dealing with a tune i just want to make sure.

Great test bro.

You should have tried shell v power nitro + is 93 and it there is difference between brands because of the quantity of detergent over the long run usage too. But really good video.

I use premium and I like to think it's healthier for that car rather than seeing a gain. I also realize this is an old vid, love the camaro btw

A for effort my friend! but in no way accurate...too many variables to consider...but I enjoyed your enthusiasm..keep up the good work..great video

I'm not gunna lie bro this would be a good race between my v6 camaro and your charger I've beaten the 5.7 challenger with the Maro but mine has a lot of mods so I wouldn't go boasting about how I beat v8 but even if you did win you still have a v8 and I'm stuck with a v6 until I hit 20! Nice car btw way bro

riley I have a question. have you ever put E-85 in your charger?? are there any things that you have to change to run the E-85?? I have a 2016 dodge charger show car. I have put E3 diamond fire spark plugs in as well as a cold air intercooler. Dude you talk about an increase in HP. Man I am telling you it does make a difference. My gas mileage went up and so did the HP.

When I first bought my charger I was using 89 and I was getting 14-15 mpg in the city. then I heard that 93 octane was better for a V8 engine. So I been using 93 for a few months now and I'm getting 16-17 mpg so it does make a lil difference performance wise too it helps the car accelerate faster.

Love the "test facility" you used

To any dodge charger owners..I have a 2012 rt... when I bought it guy was like regular is fine.. used reg, felt like it should be quicker but it was new to me so I didn't think anything of it.. then I read the manual after seeing this video and they recommend 91+ so I went to Chevron and shell and 76 did some testing.. 93 I feel makes it run too rich and fuel economy wasn't that great, so the happy medium after replacing all spark plugs and wires has been 91 Chevron! quick, and averaging 17 mpg!!! used to be in the low 13's with the same driving.. but after testing the high end gas stations my car likes Chevron 91... never put Arco or any low gas.

What mods do you have I get 6 second flat with my charger 07 5.7 hemi rt

How about the same test with a K&N Intake and performance computer tune, maybe even headers and then test the difference between 89 & 93 octane gas????

I have been using She'll 93 octane for over a year, it's advertised as a high detergent fuel, engine has gobs of power, 2009 challenger rt 5.7L.

What were the engine temps and wind speed???? Did you eat breakfast that morning???

good video.. but does anyone have any input on a turbocharged engine. I have a 2.0 ecoboost ford fusion and read somewhere that I believe ford said I Gain 10hp from using premium fuel....??? I'm clueless on this if it works or not. and what does ford consider "premium"

Very clear presentation. The video and sound were very good. Keep up the good work. Your 40 - 80 test in a tall gear did not make any sense. Is that the way you normally drive? Your engine would take advantage of the 93 octane if you let it wind up in in the optimal power range. If you were afraid of damaging your vehicle with some full throttle, high rpm accelerations, sell that dodge and get a Ford Mustang like the one you referenced in the beginning of your video. That Mustang owner was not afraid to wind up his ecoboost a few times. Good luck and hope to see you again.

You should try racing fuel. I put it in my head 2010 just to see what it would do, and only did it one time. The car definitely ran different with 100 octane fuel. Just suggestion on my part. Btw at $8.50 a gallon it should run better.

I've seen many tests with different cars between different fuels and everything comes out the same. I was told the difference is, the higher the Octane, the less likely it is to burn outside of the tank, in case of a fire. But I have no idea.

I was always told to just go with whatever the factory recommends. Now I know why.

Ive also been pumping 93 since I bought it in 2012. Idk if it helps or not, but I feel like it would make a big difference after 100k miles whether you've been filling up with discount gas or Shell V power, Ive been sticking with Shell btw

KICK IT DOWN LETS HEAR THAT HEMI

Hey man big fan of your vids , so to cut the story short best gas is to go with the 89 right for all 5.7 L v8 ?

Shoulda get set up with a dyno and data logged the ecu to see what was going on in the engine. More knock?

its so anticlimatic when he steps on it lol

I am always amazed that people switch octane and expect better or worse results. what you have to do whenever you switch fuel is wait till your almost empty fuel up with the new fuel then take your battery cables off for 20 minutes to kill all power in your system once hooked back up your on board computer will re-set to the new fuel.

Have you made a video about the UConnect features and settings? I'm having trouble setting up the equalizer for the radio. But I also wanted to see if there was any other Things the UConnect does that maybe the car manual doesn't mention. I also own a 2014 Dodge R/T Blacktop, but mine is white with black leather. Great videos, keep it up!

Been using 93 for years and it has saved me money in lack of mechanical break downs and better gas mileage/performance. I have never bought regular ever.even when prices were higher i stuck with 93.

The shifting is definitely a lot smoother, try 93 you will see the difference on the pedal

how much mpg for each tank 89 vs 93 and also throw some 87 in there

hey bud, you should run a full tank of the 93 first then do the testing on the 2nd tank of 93. it takes a little bit for the computer to change all of the fuel trims that were stored from adaptive learning with the 87 or 89 you were previously running.

Only works if you go 88 mph!

As of now I run 89 on my 5.7L Charger, my MPG is at 15.5. However I do have a Costco card but they don't sell 89 octane, I am considering running 91 octane for the better prices at Costco. Should I use 91?

I have a 5.7 Hemi and I have a predator tune which is set for 91 octane, but I put 93 octane in and it actually runs better on the 93 octane instead of 91

My 15 R/T has a mean 40 kick , I run mostly 93 , have seen the difference it makes at the track and on the street . Even higher will help too .. try sum octane boost ( a good kind ) ...

i put regular all the time and my car which is a 08 hemi charger sound like shit should i put a premium?

For me going to 91/93 made no difference on the seat dyno, what I liked was the fuel economy increase and how much smoother it ran. The plugs are cleaner and the MDS is much smoother.

great video only variables not covered were maybe altitude, an engine at sea level will perform better that at higher elevations and ambient temp will affect air density ,

just curious you are uaing the same road but the difference seems to bo in incline and decline in the road as well. Why not try 3rd gear.

I feel like with in time after constant use of 93, you would get better gas mileage, better spark and a bit quicker, same as synthetic oil use, healthier for the car, longer lasting, overall better quality.

I would figure u would put 10$ 89 then u will run out before the day and put 10$ 93....

It might not be good for racing, but it’s definitely good to clean your engine. High octane does clean your engine and that’s a fact. Higher octane has more detergents.

Is this with or without any mods to your car?

When you are changing the pump gas for the one with higher octane rating you also need to adjust ignition timing accordingly and this us where you would gain extra power. On 5.7 L engine it would be about 30-40 flywheel HP all else being equal except ignition timing. Just changing the type of fuel ain't gonna make much difference...

Can anybody tell me what type of gas the Ford Fusion SE 2017 2.5L take?

You get sub and like for having the same car as me. Good job!

If he had pedal shifters I should see him starting in gear 3 n manually clicking up everytime he hit the rev limit

it weird watching these videos when in finland i have never seen anything under 95... (if you dont count ethanol that is 85) generally there is only 2 options 95 or 98

I think honestly it depends on your mods (if any) and how/where you drive. If I'm driving somewhere over 200 miles I'm putting 87 in my 2016 Charger R/T. even if gas mileage is better with 89/93 I'm paying way less per mile using 87 so I still win. Then again dodge recommends 89, 89 being best for performance and gas mileage as well as making the 5.7 last longer while giving out the best for longer. If I'm cruising around where I live just doing what I do I keep 89 in it, maybe if I was going to the track I'd put in 93 (I'm bone stock) but I still don't see it being much of a difference. My biggest concern overall engine life and dodge says 89 is the best.

Is it possible that you had a mix of 89 and 93, diluting the 93, so that your test was not pure 93?

If you have a custom tune, the octane does make a difference. On my 2004 Mustang GT, with 89 octane & tune, I produce 305 wheel horsepower. If I run the 93 octane & tune, I produce 315 wheel horsepower. So a tune can make all the difference

I use ARAL (BP) Ultimate 102 Octane in Germany for my Mustang GT

Your findings are hard to validate because there is so much more to how the engine will perform, with the outside temperatures and humidity being a big one. Seeings how the results were so close my take away is there is no difference.

what about srt8 chraysler 2005/2010 octane 91 or 95 better ?

You started out with 89 so the pcm has learned the fuel trims for that octane. When you put 93 in it, you won't see any performance difference unless you reset the pcm fuel trims. This will also reset the changes made to the base timing due to the 89 octane. Basically the test in the video was a show of his 89 octane tune learned in the pcm.

As I'm sure it has been said in the comments somewhere, you are going to need a 93 octane tune to take advantage of the extra power that fuel would provide. If you had a 93 octane tune and did the same tests with a lower octane you would certainly see a power drop. If your car doesn't have an after market 93 octane tune and runs off of 87-89 octane you get the results that you came to during this test; although gas mileage may slightly increase. Good video by the way.

I have a dodge ram R/T small upgrades I mixed 91/E85 and I could fill a difference

It does not sound like your transmission is down shifting far enough going 40-80. Mine seems to shift down lower. My 5.7 only has the K&N cold air intake added.

Octane depends on your compression ratio, higher octane is for larger compression like 10 to 1

How was fuel economy?

The difference between 87/93 is very minimal on a factory tune. The knock sensors are calibrated in such a way from OEM that it's almost not worth it:depending on the type of car, of course. I am on my 2nd Charger (1st was an 08 Daytona, 2nd is '13 Daytona) and I have run both. The 93 is necessary after a tune. Does it run just fine without a tune? Of course. But as the numbers show, not always worth that extra few bucks per fill. I have noticed a bigger difference on where I get my gas. If I am in a pinch and I go to a mom & pop corner store, my mileage suffers. If I run Shell, the car just seems to run a lot better. I know it does in my wife's EcoBoost Flex.

I don't know a ton about tuning these modern engines, but requir it in order for it to recognize the higher octane and would need to get into the computer to do that. Does anyone know if that is correct, or not ? Its not a high-performance mill and only requires 89, so it wouldn't do anyting to begin with and should just save your money for mods that will do it some good

I personally don't get why you started in 4th gear, you aren't going to notice anything like that. You were better off letting the car stay in drive and auto select the gear it needed when you floored it. I've tried C12 in the tank and only noticed it was a bit more responsive and pulled a little harder but as for feeling a horsepower difference a dyno is the only way to see. Plus for the money, that's not even worth the test.

Good video man. I think 89 will net you the best results just due to owners manual per say. But of course if you got a tune for the 93 it will net more power (added timing and blah blah). A good test too, i know you said you did the on off thing, but taking the battery off and reconnecting it might do a more of a reset. But I don't know much about chargers so can't say. Also one crazy thing is my friend as a 2008 police charger (r/t) and he happened to race a tundra the other night and lost. It was crazy. The truck looked completely stock. Don't know if this guy 4x4 launch it or what but he was about 3 car lengths in front of him.

Just wish the Autostick in the 06-10 models worked the same as the paddle shifters.