Fuel Grade

[cowboykyle88]

So i have been running 89 in my ram...im starting to see a quick trend her in pocatello, idaho thats making this harder to do..I am seeing 85, 87, 91 grade fuels. Any thoughts on running the mid grade 87 or should i look harder for a a pump with 89???

 

[Gardenfan]

Everyone has different results depending on their use. 87 is fine for normal driving. Provided it is quality fuel.

Sent from my galaxy s3

 

[Hemi450hp]

I am 1 of those guys that only runs the better octane fuels. I wouldnt even consider running 85 octane at all. If your only choices are 85, 87, and 91, I would run the 91. It is going to run better and get better mileage which will help offset the cost. What are the prices up there for the 85, 87, and 91?

 

[BigDogg795]

I've gone back to a stock tune (predator) so I can run 87 again. If costs came down to a reasonable difference in price, I'd go back with no issues. Problem is when there's a .40 cent spread per gallon, I'll keep 87 TYVM.

 

[RYAN66]

you must be at high elevation to have 85. here in denver 85 is the regular since the higher octane just doesnt get enough air to burn properly in the engine.

 

[tmo1620]

We usually have 87,89,91 at all pumps, i run 87 with no problems what so ever, sometimes there is a shortage of 87 around here so they sell 91 at the 87 price, so the hemi gets a full tank of premium once in a while

 

[PCA4208]

We have 86,88,91 here Albuquerque. I run the 88 just because the price has recently come down, also my parents pay for gas

 

[BigDogg795]

$5, maybe $10, sure, I'd run 93. When it becomes a difference of almost $20-$25 a tank for regular vs premium? I gotta go with what I can afford lol.

 

[Exhausted]

That's a huge spread between octane!
Here in OK we normally have 87,89,91
With a .07-.11 difference between them
So on 26 gallons that's only an extra 2.86 per tank
So your telling me you guys pay an extra 10 to 20 a tank?

 

[smiley]

Octane is not about quality of fuel. Use the fuel that the engine can burn there is no advantage I run higher than 89 unless tuned anyway on a Ram. The truck can run 87 just fine but it will adjust for it. The only way you can connect fuel octane to quality is if your state lets you buy premium without ethanol then your statement is true otherwise it simply is not. So in my eyes buying 91 with ethanol in it is simply a waste of money at the pump. I buy 89 because it is usually very close if not the same as 87.

 

[PCA4208]

I don't buy ethanol crap. Pure unleaded plus for me

 

[Chewy]

Octane is not about quality of fuel. Use the fuel that the engine can burn there is no advantage I run higher than 89 unless tuned anyway on a Ram. The truck can run 87 just fine but it will adjust for it. The only way you can connect fuel octane to quality is if your state lets you buy premium without ethanol then your statement is true otherwise it simply is not. So in my eyes buying 91 with ethanol in it is simply a waste of money at the pump. I buy 89 because it is usually very close if not the same as 87.

Ditto! Unless your engine is tuned for "premium" fuel, you're actually losing HP and ******* money down the drain. Ethanol is huge here in the corn state and I run it in all my vehicles. I only buy top tier fuel so in this case Shell 93 for the G8 which has been tuned for it, and 89 for my F150 and Enclave. If you stick with a top tier fuel, you shouldn't have issues. Of course there are exceptions...


Sent from my iDevice using data nodes and algorithms.

 

[BigDogg795]

That's a huge spread between octane!
Here in OK we normally have 87,89,91
With a .07-.11 difference between them
So on 26 gallons that's only an extra 2.86 per tank
So your telling me you guys pay an extra 10 to 20 a tank?

I live on Long Island, NY. On average, my gas station carries 87 at $3.59 a gallon. With 93, it's $4.09. 89, it's $3.89. So yeah, I can run 89, but why? It's diminishing returns IMHO, maybe I'll get an extra MPG or two, but I'd wind up paying what it would cost for the extra gallon anyway.

 

[smiley]

I don't buy ethanol crap. Pure unleaded plus for me

In MN I don't think this is possible unless you get off road fuel. They have been talking about going to 15% ethanol Instead of 10% the gas mileage is affected with ethanol for sure.

 

[PCA4208]

In MN I don't think this is possible unless you get off road fuel. They have been talking about going to 15% ethanol Instead of 10% the gas mileage is affected with ethanol for sure.

Well in my neighborhood there is a little home owned station that buys only the good stuff and then sells it at the same or lower than the competition. I usually buy from there or the phillips 66 by school. But in New Mexico any station that has fuel that contains more than 1% ethanol is required to have a sticker at the pump that says so, i stay away from those places

 

[smiley]

Yeah in MN they only have to mark it if it does not contain ethanol and then it says for antiques and off road use. I use that in my boat and mowers.

 

[paulycoppola5]

I guess I should have said that everything is unleaded and not ethanol BS when I made my statement... Nobody sells fuel with ethanol in Texas that I know of. Down here with test results I have seen 93 octane is a little cleaner and better produced than 87. Then again half my family works in the oil business...

87 is going for 2.89 I think
93 is going for 3.20 or something around there.

I need to move to Texas!!!! Man everything is better there!!

Fuel up here is as follows, as far as I know: NYS requires all gasoline to be 10% ethanol and prices near me (Albany, NY) are 4.11 for diesel 3.65 for 87 3.89 for 89 and 4.22 for 93... I also just started to realize why I only see about 13.5 mpg compared to you guys down south, NO EFFING ETHANOL in your fuel!!! God I hate nys!!

 

[RYAN66]

You spend thousands even tens of thousands on your vehicle. Why not spend 5-10 dollars more a tank to keep it running 93 is all I run. Whether it's our 79 shovel head or my truck. It is just a better running fuel, hell ill go pick up 97 or 103 at the track after a night of running the truck to empty down the strip. Just to clean it out on the way home

why wouldnt you just run the right octane for your engines compression ratio?

I have no idea what it is on the hemi, but on my atv running anything higher/lower then 91 is just plain stupid and a waste of money without changing the compression ratio. I highly doubt your engine was meant to burn 103 octane and that you are wasting your money and the fuel isnt even burning.

I believe the hemi has a 10:5:1 compression ratio, so running anything other then 89 is a waste.

 

[Hemi450hp]

These motors actually do run better on the higher octane fuels. Even on stock tuning, my truck always felt stronger and mileage was always better with 93 octane fuel over the recommended 87. These newer hemi trucks recommend 89, but running 93 is still a better option. It does seem like a big difference in cost when you look at the price, but when you think about it, it is only $5-$10 more per tank for the higher octane. Not everyone needs to run this higher octane, but I always felt better running it.

 

[RYAN66]

I have a 93 oct tune that I run. Even if i wasnt... 93 oct fuel AGAIN is a cleaner produced fuel down here in Texas. Just because my truck doesn't use it all, doesn't mean it being cleaner doesn't help. The standard is held higher at higher octane ratings. I run 103 every once and awhile to clean out the system. I have solved bad injector problems by running it before on older f150s.

But I must be stupid and should run 89 even though I run around with a 93 octane tune... :**** Eater:

never called you stupid. no need to get personal.

the tune doesnt change the compression ratio. I'm not to familiar with the gas engines in these trucks but if the engine cant burn all of the octane it is a waste IMO.