Shell Nitro Gas
Race Director
Joined: May 2001
Posts: 15,323
Likes: 2,077
From: Guelph, Ontario
And that's why I use Costco premium, it's top tier, non ethanol, and priced significantly lower than Shell around here. For instance, my local Shell station is selling Nitro + premium today for a staggering price of $1.449 per liter! ($5.48 per gallon!!) But I filled up at Costco at a much better (but still terrible) price of $1.259 per liter ($4.76)
Now sure it's possible that Shell's new fuel is going to keep my fuel system slightly cleaner than Costco would, but I also add a bottle of Gumout All in One every 5000 miles anyways, so that should help clean up any slight carbon deposits that may have formed anyways.
Safety Car
Joined: Sep 2006
Posts: 4,364
Likes: 408
From: Greer, SC
And that's why I use Costco premium, it's top tier, non ethanol, and priced significantly lower than Shell around here. For instance, my local Shell station is selling Nitro + premium today for a staggering price of $1.449 per liter! ($5.48 per gallon!!) But I filled up at Costco at a much better (but still terrible) price of $1.259 per liter ($4.76)
Now sure it's possible that Shell's new fuel is going to keep my fuel system slightly cleaner than Costco would, but I also add a bottle of Gumout All in One every 5000 miles anyways, so that should help clean up any slight carbon deposits that may have formed anyways.
On a S/C car with 100% Methanol Injection the Meth may slightly decrease carbon build up as it washes the valves. I don't think any independant tests have proved this but it makes sense.
I use Shell to keep my fuel system.clean, not to help with carbon deposits.
I agree that any top tier gas is the best way to go. In my area, Shell is only a few penny's more than other gas but sounds like you Canadians get the shaft with fuel prices up there.
Edit: Top Tier fuel will still keep the combustion chamber free from carbon, it just won't clean the back of the valves or stems.
Last edited by Mike02z; Jul 11, 2015 at 06:39 PM.
Race Director
Joined: May 2001
Posts: 15,323
Likes: 2,077
From: Guelph, Ontario
Safety Car
Joined: Oct 2012
Posts: 4,788
Likes: 683
From: Austin Texas
St. Jude Donor '15
Thought that I would give it a try. Filled up Thursday afternoon and paid $3.04 a gallon, about .05 a gallon higher than Texaco that I generally use. Have only used about a 1/4 tank so it will be a bit before the results are in, I am thinking that it will take at least two tankfuls ( 28+ gallons ) before I will be able to discern any real difference.
At present my mileage is 18.5 average, not great but OK as I drive in some stop and go rush hour stuff. And as for get up and go it will be a tough call as I am not going to the 1/4 mile to test that. The seat of your pants test is my best indicator, and my 0-60 time which is around 4.1-4.2, not bad for a non Z51 7M. Might get it better if I could get more grip but the standard tires do like to spin and even when hot don't grip all that well.
So, if this thread is active in a month or so I will report my findings.
At present my mileage is 18.5 average, not great but OK as I drive in some stop and go rush hour stuff. And as for get up and go it will be a tough call as I am not going to the 1/4 mile to test that. The seat of your pants test is my best indicator, and my 0-60 time which is around 4.1-4.2, not bad for a non Z51 7M. Might get it better if I could get more grip but the standard tires do like to spin and even when hot don't grip all that well.
So, if this thread is active in a month or so I will report my findings.
Le Mans Master
Joined: Feb 2014
Posts: 9,427
Likes: 2,634
From: Gilbert Arizona
Works for me....
I've put 3 tanks of Shell Nitro 91 octane gas in my C7 (7,700 miles) and I can tell you it is not marketing hype. The "pinging", which I have experienced almost from day one, is now gone. I tested it today on the same roads and at the same speeds as before and no pinging whatsoever. I sure wish they had Nitro when I owned my C6. The C6 pinged from day one and I could never get rid of it. It didn't matter what gas I used or what additives, it pinged. Hope everyone else who is using has had as much success as I have. Happy motoring folks. 
Safety Car
Joined: Jan 2015
Posts: 3,941
Likes: 499
From: Northern Virginia
I've put 3 tanks of Shell Nitro 91 octane gas in my C7 (7,700 miles) and I can tell you it is not marketing hype. The "pinging", which I have experienced almost from day one, is now gone. I tested it today on the same roads and at the same speeds as before and no pinging whatsoever. I sure wish they had Nitro when I owned my C6. The C6 pinged from day one and I could never get rid of it. It didn't matter what gas I used or what additives, it pinged. Hope everyone else who is using has had as much success as I have. Happy motoring folks.
Le Mans Master
Joined: Feb 2014
Posts: 9,427
Likes: 2,634
From: Gilbert Arizona
Top tier...
