lol!

well, at least better than nothing? :)

for the same price, I would rather go Shell with their "NOz NAzzzwwwwzzzz Supa duper ACME Crazy 1337 PWNz j00 killer" Additive than some other no name brand. right ? :)

Some of you are barely getting 200miles, sad :(
I get 260 miles I think before the light, and I use anything I can find, from SHELL to Costco...
I have yet to use this as I really haven't found anything in the awesome land of the french.

Are you sure that's not 260Km?

when I first got my car, I can get 200 miles b4 the fuel light goes on

2 yrs ago, 180

now, 140-150

I dont know man ~~~ :( Same gas station, same gas grade. new plugs/new coils. no help :(

i get like 100-130... im always at redline...

OK, I've now gone through 3 full tanks of this Shell nitrogen stuff:

636 miles / 36.1 gallons = 17.6 mpg

That may sound pretty good to many of you, but that is about 1.5 mpg less than my average. But, maybe I've been driving a little hard lately with Spring and all.

Probably not.....I can get 250-255 MILES before the light sometimes if I fill it all the way up.

Its been over 10 days since I sent shell the email I recieved from Mazda stating that Mazda does not recomend using the nitrogen enriched fuels in the rx-8 until all testing is done. In my intial email to shell they were quick to tell me that their fuel was fine for the rotary engine but after I sent them what mazda sent me.......im still waiting. I was at the dealership today getting my cat replaced and I was told to play it safe and not use shell till mazda was done with testing, but then again no one could tell me how long testing would take. Who knows maybe it is harmful in the long run.

First post - been a lurker for a while. Absorbing lots of info, though.

Bought a '06 Copper Red Shinka almost a month ago. Been a great runner. Loving the rotary whine - been a long time since I've heard it (a couple buddies had RX-7's).

Anyway, my local station is a Shell, and I didn't think too much about the additive, however, I'm on my second tank of the stuff, and I'm noticing a rougher idle, and a bit of a twitch I hadn't noticed before when accelerating. Hmmm.

Going to try to burn through this soonest (although my temp tags expire on Sunday ...) and fill up at the Sunoco station nearby.

Got to monitor this thread ...

how awesome would it be (or not) if all Shell gas stations had to put up a big ol' sign stating "ATTENTION ROTARY ENGINE OWNERS: THIS GASOLINE .. blah blah blah" ;)

I'm willing to bet that we won't hear anything from Shell or Mazda.

d00d, I totally filled up with liek 16 gallons the other day and I swear my car runs sooooo much sm00ther. Liek, before, I couldn't feel any virbration but now even my wife's hyundai runs smoother and she's still on CITGO gas!!!11eleventy1

Seriously, expecting any significant improvement or seeing a decrease in performance such a small statistical sample...? It could have just been the fact that a heat wave went across the nation this week and everybody's driving a little more exuberantly (I know I was).

Also, aren't these additives really about making improvements (or preventing degradation) over long periods of time? What I mean is that I doubt you'd see the same amount of carbon reduction in 20 tanks of nitrogen/techron/invigorate-additive-enriched gasoline that you'd get with one application of Seafoam using the Mazda decarbonizing method.

You mean ADM paid Congress for it. :rant:

Though, from what I've read, the benefits from moving away from MTBE are worth it.

True ...but then again they were quick to reply now just waiting on what shell has to say ( if they have anything else to say) but im not holding my breath.

I agree, but as for the part about the small statistical sample that argument cuts both ways. If there's no real effect on fuel economy, I would eventually expect to also see some random reports of better fuel economy to offset our current small negative sample.

^.............I agree, mine better get better real quick. True I'm on my first tank, but mileage seems to have dropped. Only 1/4 down right now, but seems to have gone down. To early to really tell.

skipped msot of the topic basically cause i saw "octane booster" additives mentioned.

octane booster is a waste of money, it does nothing.

Do you guys understand octane ratings (that sounds smartass but im serious)?

Basically it breaks down into this, the higher the octane number the SLOWER the fuel ignites. Thats why you will here pinging when using 87 octane in a car requiring 93 octane.

This is also why 93 octane is suggested for any FI application, slower burning means more resistant to pre-ignition/detonation, aka tick tick boom.

RX-8's need no special fuel, just run the super unleaded and you'll be fine. Of course every gas company has it's little things to try to get you to buy theirs, and yes some do have advantages over engine buildup etc. But barebones 93 octane will be fine for almost anything.

Also sidenote, if you think about the higher octane burning SLOWER then you can make the connection in your head that REALISTICALLY your car running identical setups on 89 and 93 octane will normally make more power on the lower octane, barely noticeable but true. The lower octane however removes a large safety barrier and so you shouldnt dabble in it.

kevin.

Kevin, the vast majority of people in this thread already know what you have said. I believe the main purpose of this thread was that a lot of us run the Shell V-power and they just changed the formulation, so we are just discussing if it will...................
1.) Hurt the rotary..............there's no real data.
2.) Give overall decreased or increase mpg. It appears to decrease at this point.
3.) Whether or not it really helps in anyway.........and we know it's mostly hype.

I liked the V-power(93), as most did..........but I'm not going to run it based on my results of #2, because we know #3 is crap, and we don't really know about #1. I'll probably end up switching real soon to a completely ethanol free, since I have that option. Yes, V-power had up to 10% ethanol and now it has some percentage of nitrogen as well.


I may have missed the "Octane Booster" comment if it was really made, but you also didn't read everything in here. We ain't all completely stupid. :) Whether you care or not is up to you, but you've come off with "I know better than all of you" attitude in several posts lately. That's my opinion only, just thought you might want to know....................what you do with that info is totally up to you. And yes, I know what you do for a living. :Peace:

I don't recall anyone mentioning octane boosters??? That's not at all what this thread is about. But you bring up an interesting point that I've been wondering about. Totally stock 8 should be fine on 87 under normal conditions, shouldn't it? Isn't the knock sensor supposed to handle anything down to 87? Mazda just says performance might be reduced. You're saying there might be more power from lower octane. I've seen this point disputed. Faster burning doesn't necessarily mean more power. May vary from one gasoline to another, so I'm told, so some lower octane gas may have slightly more power but not necessarily. Is that not correct?

Speak for yourself! I'm no noob, but I am definitely stupid.

^...............Ha, you got in before my edit! I was already changing it!

Unless the general consensus is negative and the group think causes everyone to see evidence that matches their negative expectations.

But I want the result to be positive 'cause I have Shell stations by my home and work and I have a Shell gas card. Very convenient for me and 5% off.

And as for group think ... "I refuse to join any club that would have me as a member."

Im on my 2nd fillups of Shell's new 1337 Nitrogen Enriched V-Power 93 Octane.

So far ------ mpg has been "INCREASING". not much. I got about 10 miles more out of a tank.

Sounds good to me :)

will try a few more tanks, then go back to bp and see what sup(I always get piss poor mpg with bp)

how dangerous is it really? I mean I've run 89 octane with a good ratio of premix, I figured I'd be at 87 octane at best. Really though wouldn't you have to see something like 85 or below to really start risking something? On a NA setup. FI is entirely another story. I recall that being a popular tactic in the rotary circuit, hauling in low octane fuel.

/Greg

Wow, thats strange, V-Power is 98 octane here in Australia:
http://www.fileden.com/files/2007/7/...icture%205.png

Different standard for measuring octane. You guys use RON, right?

Thats correct... l'm guessing USA does not?

We use an average of RON and something else ... checking Wiki ... yeah, an average of RON and MON: http://en.wikipedia.org/wiki/Octane_rating

USA uses Research and Motor octane ratings, averaged.

Motor is usually 7 to 9 numbers lower, so 98 RON becomes USA 93/94 (very roughly).
94 is the highest I've seen around here......

S

Cheers guys, I shouldn't have been so lazy! I'll admit, it's just something l expected to be universal...

Ok...I squeeked out 170 miles on 10 gallons of Shell. Doesn't look like a bad tank of gas...just looks like bad gas. I had similar results about a year ago when I ran Speedway gas a couple times. If only Sunoco was closer to my house. :(

I used 6 tanks of the new formula shell gas. I always use shell v-power.

All 6 tanks my MPG went down ALOT. 3 tanks into it I installed my BHR coils. MPG was still low.

Switched to Chevron 93 and it went back to normal.


The old formula shell V-power got me the best MPG out of any gasoline regardless of octane or brand. The new formula sucks for gas mileage. At least in Houston, TX.

There is a shell right next to where I live and they are usually a few cents cheaper. So this sucks for me.

I can state for a fact the "new" Shell gas is mixed with 78.08% nitrogen, 20.95% oxygen, 0.93% argon, 0.038% carbon dioxide, and trace amounts of other gases.

:lol2:

I drove 15 miles on the gas light (out of town) to find a non-shell station just to avoid the Nitrogen Enriched gas. Passed 2 of them and some arco, etc places to find a Mobil station.

Shell seems to be ok for me.

2 Tanks. my MPG has increased !

Before : I barely be able to make 160 b4 my light goes on.
After Shell : I can make it to 170 b4 my light goes on.

Today, I filled it up with BP's Invigorate . Lets see what will happen.

Update, on the new Shell Nitrogen Gas for me. I get better mileage when just normal driving, under 7K rpm on a whole tank.

If I am driving "spiritedly" I get less mileage than when I drive "spiritedly" on the old V-power shell gas. :( I wish I had a choice between old V-power and the new Nitrogen V-power.

I think I get a little more omph on the new Nitrogen V-power though, but it could just be me.

I drive admittedly like I stole my car, get 200miles on a tank, 250 miles if freeway driving. Spirited about 180, fill up with chevron or mobil. used to fill on shell when desperate until the whole nitrogen thing....

I just tried this out the other day by accident.. 1 gallon in 5 miles epic.. switched back to mobil very quickly.

jesh, I thought mine sucks. I bithc when I get to 220 for a 1/4 tank. usually light isnt until 260 or so.

89K miles on a 2004 LY.

^.................damn near impossible Shady.
Something is drastically wrong with the way you measured it!

shady: not possible to get 5mpg, not even in this car.

Been using it since it came out, haven't noticed any difference. Mileage is right about where it normally is

if I can get 220 till the light comes on. I will sell my Honda FIT right away.

:)

ny: that's crazy that your mpg is so low! I'll go 240 before I get to the gas station and the light STILL isn't on.

So my engine has a problem ?

KEVIN WHERE ARE YOU ?! :lol:

I've been using only shell v-power in my car ever since I got it. I noticed no difference from the added nitrogen in the fuel.

I wonder what the longterm effects of adding N20 in fuel is to emissions, particularly NOX??

Um, the nitrogen is a scam. :lol:
All gas has nitrogen mixed in it.
Air is 78% nitrogen.

On a side note isn't it a bit odd that our shell nitrogen is ethanol free? I figured they would use ither one or the other ethanol or no ethanol. Also it seems like I'm getting way better mpg. Its thursday and I'm at half a tank-check previous posting for relavance. Ill reset my milage on the next fill for an official mpg.