Premium Gas

[JCWP]

It pisses me off how much we pay here in Vancouver: easily 0.50 cents per litre more than anywhere else in Canada - they love adding more and more carbon taxes on - new NDP are doing so - on everything to do with energy. They are hurting the people they are trying to help - typical socialist dogma.

 

[Ken54]

Shell V Power premium. And I get Air Miles!

 

[JCWP]

Shell V Power premium. And I get Air Miles!

That's what I use 91 VP octane.

 

[rfh928]

Does GM recommend to use high test in our vettes? If not used does it nullify our warranty?

If your car recommends premium gas, should you use it?

Several mechanics over the years have told me that it's a false economy to not use premium when a motor has been tuned for it...reduces fuel mileage so you don't save as much as you might hope. I used 87 in my C3 Vette as that's all it needed...91 in my C5 and now 93 in my C7.

 

[JCWP]

Several mechanics over the years have told me that it's a false economy to not use premium when a motor has been tuned for it...reduces fuel mileage so you don't save as much as you might hope. I used 87 in my C3 Vette as that's all it needed...91 in my C5 and now 93 in my C7.

Not sure I would trust what a mechanic has to say about the topic to be honest. I always used Chevron 94 in all my corvettes and my Shelby GT500 because; well, just because, Now in my C7 I use Shell 91 V - no ethanol: the computer adjusts the engines function (settings) as I understand it. 91 Octane is the highest available at my local shell. I beleive there was a very technical post on octane and how it is measured etc. a while ago on CCF. I may have been the one that posted it?

 

[rfh928]

Not sure I would trust what a mechanic has to say about the topic to be honest. I always used Chevron 94 in all my corvettes and my Shelby GT500 because; well, just because, Now in my C7 I use Shell 91 V - no ethanol: the computer adjusts the engines function (settings) as I understand it. 91 Octane is the highest available at my local shell. I beleive there was a very technical post on octane and how it is measured etc. a while ago on CCF. I may have been the one that posted it?

I wouldn't have an issue using 91 and was thinking about it...but as it's readily available here for 3-4 cents/L more I figured I'd go with the 93.

 

[JCWP]

I wouldn't have an issue using 91 and was thinking about it...but as it's readily available here for 3-4 cents/L more I figured I'd go with the 93.

Makes sense to me: I'd do the same.

 

[Black 03 Z06]

I buy gas at Canadian Tire stations for my truck. Never noticed until the other day that 87 has 10% 89 has 5% and 91 has 0%. Never tried running their 91 in the Corvette but may give it a try next summer.

 

[Rruuff Day]

Our choices here are limited for 94. Only a couple sell it andI won't use ethanol so Petro Canada is out. The Shell or Co-op 91 seemed to work just fine in my C6 and now the C7

 

[Black 03 Z06]

Eric, I am not sure if anyone in Ontario other than Petro Canada offers 94. I miss seeing our SUNOCO Stations.

 

[Rruuff Day]

Eric, I am not sure if anyone in Ontario other than Petro Canada offers 94. I miss seeing our SUNOCO Stations.

You don't need 94 Murray. Petro Canada and Sunoco are now one and the same. Sunoco just elected to keep the PC name in Ontario. There are very few 94 octane fuels out there that do not contain ethanol anymore. Ethanol actually boosts the octane rating. Higher octane fuel burns slower than lower octane, thus the reduction in pre-ingnition knock but our cars sensor systems nowadays adjust accordingly, thus why you never had a problem burning lower octanes. Ethanol burns slower as well. The only reason I don't cheap out for a lower octane fuel is the ethanol. I just don't like the corrosive qualities. Gas (in Alberta at least for now) now is mandated to contain a minimum of 5% renewable content (ethanol is the cheapest so thats why they use it). Some stations, that still offer an ethanol free 91 octane fuel meet the minimum renewable content (ethanol) by blending 10% in their 87 octane and 5% in their 89 octane. This allows them to have 0% in their 91 octane and achieve the higher octane by refinement with non-renewable additives. Soon, I venture, we will not have a choice. Feds are pushing for higher and higher renewable content all the time. 2020 is scheduled for a higher content again and 2025 is rumoured to have even more again. Soon we will be burning pure corn gas in our vehicles and corn on the cob will be gone from our grocery store shelves.... lol...

 

[Darren]

You don't need 94 Murray. Petro Canada and Sunoco are now one and the same. Sunoco just elected to keep the PC name in Ontario. There are very few 94 octane fuels out there that do not contain ethanol anymore. Ethanol actually boosts the octane rating. Higher octane fuel burns slower than lower octane, thus the reduction in pre-ingnition knock but our cars sensor systems nowadays adjust accordingly, thus why you never had a problem burning lower octanes. Ethanol burns slower as well. The only reason I don't cheap out for a lower octane fuel is the ethanol. I just don't like the corrosive qualities. Gas (in Alberta at least for now) now is mandated to contain a minimum of 5% renewable content (ethanol is the cheapest so thats why they use it). Some stations, that still offer an ethanol free 91 octane fuel meet the minimum renewable content (ethanol) by blending 10% in their 87 octane and 5% in their 89 octane. This allows them to have 0% in their 91 octane and achieve the higher octane by refinement with non-renewable additives. Soon, I venture, we will not have a choice. Feds are pushing for higher and higher renewable content all the time. 2020 is scheduled for a higher content again and 2025 is rumoured to have even more again. Soon we will be burning pure corn gas in our vehicles and corn on the cob will be gone from our grocery store shelves.... lol...

More than petro Canada sells premium gas with no ethanol. Costco is a top gas.
As for 94. I don’t use that. There is a website for all gas stations that carry non ethanol fuel.

 

[Rruuff Day]

More than petro Canada sells premium gas with no ethanol. Costco is a top gas.
As for 94. I don’t use that. There is a website for all gas stations that carry non ethanol fuel.

Our choices here are limited for 94. Only a couple sell it and I won't use ethanol so Petro Canada is out. The Shell or Co-op 91 seemed to work just fine in my C6 and now the C7

All Petro Canada gas contains ethanol. Costco advertise their 91 does not but I don't buy their fuel since I never know for sure wheres they are getting it from, and besides, I don't have patience for long line-ups. Shell 91 does not have any ethanol, Co-op 91 does not, Esso 91 does not. They are my go to stations. Just about all US gas is blended with ethanol so I don't have a choice when I'm down there but I make sure it doesn't stay in the tank for long.