Maybe its cause i only see 93 in San Antonio, but i have not ran upon a bad batch yet. I dont go looking for it either, i really favor gas stations where the pumps separated by octane.

 

Any one of these and you'll be fine. Top Tier Gasoline

 

We have 94 up here at the Chevron's

 

Lucky!!

We used to have Sunoco Ultra 94.

 

I always use the wawa regular by me. Mostly because its on my way to school and its the same price cash or credit. I've never had a problem with it. And i believe all gas in the NY/NJ area has 10% ethanol (required bs)

 

I use Mobil because, for everything, I always like to match things of the same brand. I use Mobil 93, Mobil 1 synth oil and Mobil oil filter. I know it's useless as far as durability and quality, for sure if I use Mobil oil and Shell gas is just the same thing, but it's just me. I guess it's a psychological thing lol

 

I have been using Shell 95% of the time with my LSJ for the past 71K miles. Over the past couple months, I tried Chevron on all fill ups. I seem to have better mileage with Chevron, also seem to have a smoother idle.

 

Yeah.... I never had good results with Shell gas.

 

I use chevron and shell. I prefer she'll cause not only I get better gas mileage with it but they use 7 times above the minimum of detergents the government say gas stations need to have. Chevron use about 2x the detergents. Argo, am/pm etc use the bare minimum. I researched this a lil while ago.

 

all we have is 93 in va, as far as ive seen at least. at sunoco we have 94 or 95 on top of 93

 

Ouch, Premy by my is $3.79/Gal
Interesting, Ive never seen pumps separated by octane.

 

Lucky you!!! By me the 93 is anywhere betwwe 4.39 and 4.69 per gallon

 

Also a big factor is each individual gas stations holding tanks. We just had a chain of stores that had to dig up and replace all of their tanks.

 

Stations have to replace their tanks every ten years or so. federal law

 

This...

I can't believe people are really that picky about gas... it's all the same. All the "runs better" "runs smoother" is just placebo cause by your mind being so obsessed with the idea of a "better gas".

Sure there are stations that maybe put water in their gas (seen the case) because they're cheap as dirt. But any other stations that are normal and reputable like Sunoco, Mobil, Shell, Gulf, Valero,... they're all good.

Beware poor/ghetto looking stations with cheap prices. That's all I'd say. If the nozzle leaks gas or it's wrapped with electrical tape get out of there

 

Always ran 93 Chevron in the balt and my motocross bikes. My piston and valves on my bikes always had very little carbon buildup after rebuilds. Also I saw some slight knock in the cobalt once running 93 Mobil when I couldnt get to a Chevron station but that could have been just a bad batch of gasoline.

 

im not sure, but i think he mean separate hoses for each grade. i've seen them but they are the older pumps and are getting to be fewer and fewer.

i dont buy into the crap about additives. i run octane booster through a tank about 4x a year. and i see 30-32 MPG in my 2.4. the 10% ethanol is not a requirement, but it is the allowable limit by law. and with it being cheaper than gas, they seems to use it almost everywhere.


i've never understood the "Nitrogen Enrichment" isnt nitrogen Inert? it doesnt burn. and how the hell would it work?

 

This is absolutely untrue. All gas is not created equal. The additive package and quality of station plays a huge role in to overall performance.

 

Thats why I started this thread. Wonderinf if somebody knows the differences

 

I agree its not created equal. But is it THAT important for you to drive maybe extra 2 miles to find a Shell gas station and pay 50 cents extra/gallon? They're all different, gas is never created equal, even those in the same gas station might change their formula every now and then or add some fillers now that they have their reputation built up.

I don't think the regular driver should care about diff gas stations and the impact it will cause. Maybe if you're in the tracks, and even if you are, what is Shell gas going to do for you? Add 15hp?

Do yourselves a favor and save money. If you're worried about performance just put new stickers in your car

 

Not concerned about mileage, just I'm concerned about better gas for the engine. I know a different brand doesn't make any difference as far as performance.

 

I paid $0.15 a gallon the other day.
(Not trolling either)

 

If you're not trolling, you must be joking then

 

Nitrogen is not inert, the strength of the bond between Nitrogen molecules is sufficient enough to make combustion thermo-dynamically unfavorable. In other words it takes more energy to make nitrogen burn than you get out of the reaction. The vast majority of the air you are currently breathing is made of nitrogen gas thus during combustion it is always present, an engine cylinder just happens to have the right combination of heat and pressure to cause nitrogen combustion, although it is often not completely thorough leading to nitrogen oxides (NOx) hence catalytic converters became factory equipment.
As far as the “nitrogen enrichment” of shell’s gas, they add a nitrogen amide which is generically something like this [R-O-C-R”-N-R’] which is a carboxylic acid bonded with a nitrogen molecule. The essential purpose behind this compound is to dissolve carbon build-up by acting as a catalyst for the nitrogen contained within and atmospheric nitrogen which bonds with free radicals on the polar end of the molecule.

So long story short it does make a difference, albeit a lot less since the fuel doesn’t come into contact with the valves very much in a direct injected engine and most of the aforementioned Top Tier fuels have a similar level of active detergents.

Verdict: Marketing (with a little science behind it)

 

I look for that too. Shell near me has that.... That way you don't get a gallon or two of regular gas that's in the hose.
I had the opposite result when I switched from Chevron
Again, my results were opposite with my SS/TC.... My rotary on the other hand, (05 RX-8) worked way better on Chevron gas.. Something about Japanese cars and Chevron...