93 Octane! I like it!

[Litfuse]

And the manual is explicitly leaving out the fact that you CAN run higher octane and achieve better efficiency and power, which has been documented by not only myself and other members, but it's been shown on dyno testing also.

This is true of not only the FCA Pentastar, but most modern high compression engines in general.

In fact, it was noted as early as 2012 that the Pentastar was one of the few new high compression V6 engines with a 87 octane suggestion. Most others are recommending the higher octane for better performance. It was clear that FCA did that purely for convenience, and a marketing point in advertising materials.

Surely you don't think it's some kind of magic that a high compression FCA engine is different from a Toyota, GM, etc?

LOL to all the people who "liked" your comment. It's good to know that they can read the owners manual too.

#sheep

Please share your documentation of the proven power increase on your 3.6L. If you do have proof, was it done on a dyno? And if on a dyno, was it on the same day with the same dyno operator?

I look forward to your response.

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[Litfuse]

I can’t tell if it is a NA or FI motor. Does it ever say in the video? I didn’t hear them give a description besides it being a four cylinder.

On a high compression NA motor or FI motor, I agree octane counts. Not on the Pentastar motor.

 

[IronScott]

But did you throw on that catch can that gives 10mpg more?

I LOLd

 

[Markham]

Why no love for 89 octane?

 

[Litfuse]

But did you throw on that catch can that gives 10mpg more?

Yeah, it looks like I could sell a couple Wrangler Type R stickers as well.

 

[Renegade]

I don’t think any scientific evidence will convince people that their butt-dyno is wrong, but just for the sake of argument:
I’ve done octane testing on a dyno before to determine what octane fuel results in the greatest power output of a specific engine. There was only benefit up to a certain point in any given engine. Beyond that point, horsepower actually starts dropping off. If fuel with an octane rating higher than 87 resulted in higher output, it would similarly result in increased fuel mileage. Given today’s focus on fuel economy, my bet is that Jeep would use that to achieve better mileage ratings by using said fuel. Did these butt- testers (I just had to call it that) feel something? Possibly, but it could have actually been a result of LESS power (although likely insignificant, if at all).

 

[misanthrope]

Piss and vinegar is what I’m running right now. I can definitely see improvements in throttle response and miles per gallon. Would highly recommend; plus it’s super cheap!

What did you eat today? Any vitamin supplements? That will affect mileage. Not Balsamic vinegar? Waste of money. And not that awful cider vinegar Millennials have been drinking to cleanse their colons, is it? I find the more Scotch I drink (single malt, Islay preferred, Lagavulin if I can get it) the more giggity my pee has in it. Mix that with some good old white-clean-out-your-Kuerig-with-it vinegar and any car will run tip-top. Octane? That's for guys who pee sitting down...

 

[saltyaggie]

Here's my experience - in 28k miles with my 3.6 6MT and plenty of dabbling with different octane fuels, I've seen zero difference in MPG or performance among octane ratings. HOWEVER - I exclusively use premium fuel at this point because my engine does predetonate at low RPM with anything less than premium. With premium in the tank, I have zero knock and still average the same 20.5 MPG that I get with regular or unleaded plus fuels.

 

[misanthrope]

Lol

People ask me all the time about the tank in the back. They think I’m running a meth kit but it’s just a jug of piss..

Hmmm... meth piss would be crazy potent.

 

[misanthrope]

Why no love for 89 octane?

Because that's Canadian fuel, eh?

 

[TexasJeeper]

Higher octane can make a small difference...If you are running the Jeep in really high heat and beating on it. Other than that, nope, that's not how octane works. Best running engines are the ones that run with compression and timing at the verge of needing higher octane, just barely the octane you need.

 

[Bearded_Dragon]

Ssooo Superchips' 93 octane performance tune gives 29HP and 37TQ, which you'll somewhat notice in a 4000+lbs vehicle. The 87 octane performance tune is 19HP and 17TQ I believe, which you won't notice in a 4000+lbs vehicle.

What kind of power gains do these people running 93 octane on a stock tune think they're getting?

 

[xeon]

I can’t tell if it is a NA or FI motor. Does it ever say in the video? I didn’t hear them give a description besides it being a four cylinder.

On a high compression NA motor or FI motor, I agree octane counts. Not on the Pentastar motor.

Ok..I am not an engine timing expert but if any of your JLUs Penstar 3.6s are like mine, it has a tendency to knock a lot. The colder the weather...it seems more prevalent. The key take away for me after watching this view was the computer controlled knock sensors reduce output.

Just saying...for those of us who have tried 93....its make no sense to go back to 87 with gas prices as high as they are. But for those saying 93 octane should not make a difference, I believe you are right. I am of the mind set that 87 just produces too much knocking and the knock sensors and computer protects the engine by reduces output and thus consumes more gas for less performance. Ugh.,

 

[ITSTHEWIFES]

put what you want in it, seriously it is a $3 difference on fill ups if that., I love the way mine sounds feels with 93 in it.

I have always noticed a few more miles per tank when I use 93

87 is for your friggin lawnmower

I put 100 in my lawnmower once...or twice I don't think it liked it. Ran super hot and loud. But was a fun experiment

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