I just filled the new the new dodge up with some 93 octane and it feels like its a completely different truck, feels like i have 20 more horses under the hood. Its weird because they say in the owners manual that you should use 89 octane.

The previous fill up i had to put 87 in cause thats the only gas the particular station had. Was that gas just really Sh*tty or does the 93 make that big of a difference?

If it wont hurt anything im going to keep filling up with the good GO-Juice as long as its stays under 2.00$ in my area

Has anyone else experienced this? Or am i just nuts, and my mind is trying justify the extra 10 bucks at the pump?

 

93 will gunk up your plugs and 93 burns hot we need to burn cool ive got 55gal of 120oct purple in my garage ive been half tempted to use but i dont wanna melt pistons.

 

Maybe the garbage fuel had alot of ethanol in it causing lack luster performance. Maybe the 93 is 100% gasoline and no ethanol; when I use mixed gas IMO I loose MPG and some "output." (IMO)

 

So you saying i shouldnt use 93, I thought 93 kept the engine cleaner and not gunk the plugs up

 

The 93 octane MAY have more detergents in it, but it's unlikely that using it constantly will have any benefit unless you have a tune you need it for. If you want to use it occasionally to get the benefits of the detergents, that's probably fine, but otherwise you are just wasting money. I'd agree with Ilovemytruck that maybe you just got some cheap gas. I put 89 in mine all the time, usually from Hess, Sunoco, or Shell. All gas in MA has 10% ethanol in it, so I don't have any "100% gas" to compare it to.

 

Only time i ever saw any benefit from higher octane gas was when im on a long trip, perhaps a bit more power and much better milage but that changes when i run around town. not worth it IMO

 

The premium fuel wont gunk up your plugs, especially with the detergents and additives in it these days.

The higher the octane the cooler it burns. But go too high and your engine wont run worth ****, especially in the winter time.

 

I think im going with the theory that the 87 I got 2 fill ups ago was sh*tty and the 93 i just got was 100% 93 octane which would explain the power increase, thanx guys

 

there really isn't any increase in power.. the only reason higher octane fuels are associated with higher power engines is due to the flash point being higher on higher octane fuels. the higher the octane of fuel the harder it is to ignite. in high performance engines the temps can reach the flash point of low octane rated fuels causing the fuel to combust upon injection into the cylinder.. this is known as detonation for anyone that didn't know. therefore higher octane fuels are used so that the fuel actually ignites with the spark plug not just the ambient temperature..

this is why many older vehicles when ran on a higher octane fuel people believe the vehicle is running better. mainly because older vehicles especialy those that are not taken care of, not run at operation temp often enough.. ie stop and go, vehicles that are babied tooo much they will aquire carbon deposits in the cylinders. these deposits glow hot when the engine is running and can cause a lower octane fuel to ignite causing a sort of pinging sound which is mild detonation. running the higher octaen fuel stops the red hot deposits from igniting the fuel prematurely resulting in a smoother running engine.

u r not hurtin ur truck by running 93. not really helping it but hey why not.. i run 93 in mine. i have heard and i don't know if it's confirmed but i know for a fact many stations have up to a 10% ethanol content in regular 87 octane... i have heard that the higher octane fuels do not contain ethanol. which means that with the higher octane better mileage and in some cases better performance will be noticed. i'm inclined to believe this because when i switched form 87 to 93 i saw a mild increase in mpg... approx 1-2 mpg. i plan to switch back to 87 in the next month or so to see if the mileage goes back down.. just to see. if anyone has any information about this then feel free to pm me.

 

93 octane around here has the bad rep of gunking everything up. 93 runs cooler??? thats news to me everything ive read is the higher the hotter