Wawa gas 92 octane good bad? 6.2l

wildlyfe200 · September 8, 2017

I just got done filling up at wawa and noticed that they offer only 92 octane of course it was right after my truck was done being filled up for $76.

I have a denali 6.2 2017 I have 93 octane tune.

So my question is is 92 and 93 octane a big difference.And from what I hear why was gas can be a crapshoot you can actually get 93 but since that use basically gas it's left over it could be 92.

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truckguy82 · September 8, 2017

I get it occassionally. I havent hooked up a scanner to see if it knocks, but I dont hear any or noticed reduced power.

<BB tuned 6.2

Accidentally filled up with 87 one time, that knocked like crazy

I've noticed wawa premium isn't even that cheap, so I don't get it often.

jimmyboy8301 · September 8, 2017

I've run wawa 92 plenty of times with no issues. I also run Costco 93 and don't notice any difference lol

2017 Chevy Silverado LTZ Z71 6.2L

4.5" Zone

22x10 AF Grips

33x12.5 Nitto Ridge Grapplers

Instagram @wildchevys

KMGZ400 · September 8, 2017

I have been running only Wawa 92 in my cars and gas trucks for as long as I can remember with no issues!

wildlyfe200 · September 8, 2017

I've run wawa 92 plenty of times with no issues. I also run Costco 93 and don't notice any difference lol

2017 Chevy Silverado LTZ Z71 6.2L

4.5" Zone

22x10 AF Grips

33x12.5 Nitto Ridge Grapplers

Instagram @wildchevys

I have a 93 octane tune but ran a 1/4 of the tank of the 92 out today and I don't notice any difference. For the price I'll stick with Gulf 93 which is where I usually go I pay cash and it's the cheapest around. I hear Costco gas has pretty good detergents in it and is considered top tier.

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wildlyfe200 · September 8, 2017

http://www.toptiergas.com/licensedbrands/

Here the list of top tier gas stations. I wonder how important the top tier additive packages are for people running premium

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2017SierraSLT · September 8, 2017

My local gas station's best octane is only 91, but it is pure gas-zero ethanol.

Snoringbear · September 9, 2017

I get it occassionally. I havent hooked up a scanner to see if it knocks, but I dont hear any or noticed reduced power.

<BB tuned 6.2

Accidentally filled up with 87 one time, that knocked like crazy

I've noticed wawa premium isn't even that cheap, so I don't get it often.

Wazz Wawa?

truckguy82 · September 9, 2017

East coast convenience store

It put every other convenience store out of business. Expect them to wipe out all the convenience stores near you within the next 20 years.

Donstar · September 9, 2017

East coast convenience store

It put every other convenience store out of business. Expect them to wipe out all the convenience stores near you within the next 20 years.

I thought he was talking about Walmart! I looked it up and it is a rather large chain of stores. I am surprised I never heard of it before! You can learn a lot on this forum!

Motor City Rick · September 9, 2017

The use of 92 octane comes down to 3 factors, spark timing requirements, cylinder compression / altitude conditions and a distant 3rd, cylinder head type / design.

I will not get into the fuel chemistries, specific gravities, and the 40 plus "bouquet" blend fuels that are sold in this country etc.

The use of 92 octane requirements would occur for the following:

If you have a non-aspirated motor.

If you have a higher compression motor. Above 10.5 to 12.4 CR @ Sea Level

If the vehicle is used in much higher altitudes.

If you have a performance tune with lower compression less than 10.5 to 1, 92 or higher octane fuel is a pure waste of money.

Most people are lost in the woods for the actual need to use the right octane. Sounds cool, but a major waste of money. It's all contingent on what the motor actually does in performance.

Here is some of the data I found octane:

87 Octane is good up to about 9.5 to 1.

91 octane is good up to about 10.5 to 1.

93 can go up to about 11.5 to 1 - if the motor is properly dialed in.

Ethanol will induce spark knock because it burns much faster than gasoline. It's great in cold weather conditions (Alaska, the Dakota's), but not in warm conditions (Arizona, Nevada).

Knock sensors were installed because all the different gas blends of gasoline that can be exposed to varying temperatures and altitudes.

I had an ECM "performance tuned" on a stock motor (cast iron heads) with 9.0 to 1 compression ratio @ 642 ft. in altitude, drove over 1000 miles with 93 octane versus 87 octane, with the same distance. I saw "zero" improvement in power, gas mileage or motor behavior. I will not spend the additional dollar per gallon for 93 if it does not improve anything.

wildlyfe200 · September 9, 2017

East coast convenience store

It put every other convenience store out of business. Expect them to wipe out all the convenience stores near you within the next 20 years.

Every town around me here in NJ has had a super Wawa built with in the last few years I have never seen so many of any the same stores pop up like they have ever. I can practically spit on 3 of them from my front yard.

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wildlyfe200 · September 9, 2017

The use of 92 octane comes down to 3 factors, spark timing requirements, cylinder compression / altitude conditions and a distant 3rd, cylinder head type / design.

I will not get into the fuel chemistries, specific gravities, and the 40 plus "bouquet" blend fuels that are sold in this country etc.

The use of 92 octane requirements would occur for the following:

If you have a non-aspirated motor.

If you have a higher compression motor. Above 10.5 to 12.4 CR @ Sea Level

If the vehicle is used in much higher altitudes.

If you have a performance tune with lower compression less than 10.5 to 1, 92 or higher octane fuel is a pure waste of money.

Most people are lost in the woods for the actual need to use the right octane. Sounds cool, but a major waste of money. It's all contingent on what the motor actually does in performance.

Here is some of the data I found octane:

87 Octane is good up to about 9.5 to 1.

91 octane is good up to about 10.5 to 1.

93 can go up to about 11.5 to 1 - if the motor is properly dialed in.

Ethanol will induce spark knock because it burns much faster than gasoline. It's great in cold weather conditions (Alaska, the Dakota's), but not in warm conditions (Arizona, Nevada).

Knock sensors were installed because all the different gas blends of gasoline that can be exposed to varying temperatures and altitudes.

I had an ECM "performance tuned" on a stock motor (cast iron heads) with 9.0 to 1 compression ratio @ 642 ft. in altitude, drove over 1000 miles with 93 octane versus 87 octane, with the same distance. I saw "zero" improvement in power, gas mileage or motor behavior. I will not spend the additional dollar per gallon for 93 if it does not improve anything.

Question is if I have a 93 octane tune done will putting in 92 make any kind of a difference? I can't feel it. Sorry I don't have the exact compression ratio that was tuned.

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Snoringbear · September 10, 2017

I have a 93 octane tune but ran a 1/4 of the tank of the 92 out today and I don't notice any difference. For the price I'll stick with Gulf 93 which is where I usually go I pay cash and it's the cheapest around. I hear Costco gas has pretty good detergents in it and is considered top tier.

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Pulled up a US map of Wawa locations; appears they're mostly up in the northeast, so no worries here. About octane, just about all premium sold here in the DFW metroplex is 93 octane which is what I burn in my 6.2. Interestingly, out in remote areas of Texas, surrounding states and such, premium is usually 91 octane. Just a side note, if not towing, I sometimes mix regular with premium. In fact, because of Hurricane Harvey, gas has been hard to find till a few days ago and it's still spotty at times. So, I've been buying whatever octane I could find and being regular (87 octane) usually is what's available I've been using it and its burned fine, no knocks, misfires, etc.

Motor City Rick · September 10, 2017

Wildlyfe200,

Like I said earlier, it takes multiple factors to use any high octane fuel. Compression being most important.

Having a "performance tune" doesn't mean chit if you have lower compression motor, the lack of fancy camshaft / head combinations. Performance tune, depending who's doing it, changes the air/fuel ratio to 13.5 from 14.7 at any given altitude / temp range and changes the spark timing curve to come in sooner.

I myself have one of those "performance tunes" done on my ECM, saw no improvement in power, gas mileage or anything when using 93 verses 87 octane. I have 9 to 1 compression.

SnoringBear's 6.2 motor has 11.5 to 1 compression. He has to run 93 octane or the motor will run flatter because of less timing given to the motor running lower octanes.