Cowboy Hunter
Unless your car is tuned for premium, you wont see a difference. My truck tuned for 91 gets better milage while towing than 87 with stock tune. While not towing, it doesnt match the 20c difference.Originally Posted by cidley69
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The best way to get better mileage for cheap is to use 87 octane without ethanol in it.
Last edited by Tik-Tok; 01-11-2020 at 10:39 AM.
coffee shop soy boy
I don’t consider premium versus regular to be a choice of which is better fuel economy, put whatever grade is Recommended by the manufacturer for the vehicle.
What you can choose is whether you pick gas with ethanol in it or not which does have a real fuel economy impact.
Originally posted by Thales of Miletus
If you think I have been trying to present myself as intellectually superior, then you truly are a dimwit.
Originally posted by Toma
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Banned
Premium vs. regular has little/nothing to do with fuel economy. Also premium isn't "betteR" for your car (unless your car recommends premium). Any other wives tales I missed?
coffee shop soy boy
Mothballs in your gas tank? LolThis quote is hidden because you are ignoring this member. Show Quote
Originally posted by Thales of Miletus
If you think I have been trying to present myself as intellectually superior, then you truly are a dimwit.
Originally posted by Toma
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Registered User
less ethanol = better mileage
less ethanol = premium gas
better mileage = premium gas
My Karma ran over your Dogma
Registered User
I checked this site again and apparently there are now two Coop has stations that offer ethanol-free regular grade? Seems unlikely that it would only be a couple Coops that did this...
https://www.pure-gas.org/index.jsp?stateprov=AB
Ultracrepidarian
Cowboy Hunter
Coop gas in Calgary hasn't had ethonal in it for over a decadeThis quote is hidden because you are ignoring this member. Show Quote
Registered User
Shell 91 for the bikes and Shell 87 for the car (daily driver, nothing special).
Stateside is chevron/shell, but chevron in SoCal seems to be more abundant.
coffee shop soy boy
Premium does not always have less ethanol. Calling it premium is actually stupid, so let’s just call it high octane which is what it actually is.This quote is hidden because you are ignoring this member. Show Quote
Ethanol has a base octane rating of 100, and is often blended in higher concentrations in gas to raise the octane level of the blend.
In many many cases High Octane (“premium”) gas has more ethanol in it than regular gas because of this. Which could actually mean putting high octane gas in your shut box that calls for regular leads to poorer fuel economy.
Originally posted by Thales of Miletus
If you think I have been trying to present myself as intellectually superior, then you truly are a dimwit.
Originally posted by Toma
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Registered User
Not in any vehicle I've ever owned and there's virtually zero chance now that major label stations are gouging +20˘/L for high octane when it used to only be 10˘.This quote is hidden because you are ignoring this member. Show Quote
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Kendal Jenner
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Never ever put premium gas in a stock vehicle thats designed to run on 87. You will LOSE mileage (could be 2-5%) .This quote is hidden because you are ignoring this member. Show Quote
If you want to clean your fuel system better, buy a 10$ bottle of cleaner and rev up the engine.
Registered User
I used to get Coop gas without issue, I switched to Shell since there is zero ethanol, along with the air miles. Been extremely happy with Shell gas, for the bikes and the cars and trucks.
"The music business is a cruel and shallow money trench, a long plastic hallway where thieves and pimps run free, and good men die like dogs. There's also a negative side"
Cowboy Hunter
Shell 91 octane only. 87 has ethanol.This quote is hidden because you are ignoring this member. Show Quote
Registered User 
Not according to that one beyond guy earlier in the thread.This quote is hidden because you are ignoring this member. Show Quote
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Registered User
I use CO-OP diesel in my truck, Shell 91 in my car and CO-OP 87 in my company car.
coffee shop soy boy
Dude you need than VPower diesel Yo!This quote is hidden because you are ignoring this member. Show Quote
For... reasons...
Originally posted by Thales of Miletus
If you think I have been trying to present myself as intellectually superior, then you truly are a dimwit.
Originally posted by Toma
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Registered User
Probably not worth it on my stock truck, possibly if it was modified more I’d consider it. I use a fuel conditioner in the truck every time I fill up as well.This quote is hidden because you are ignoring this member. Show Quote
Registered User
I never knew putting premium gas into engine designed for regular is actually detrimental.
Along these lines, is putting brand of regular fuel without ethanol (rumoured to be Calgary coop gas) bad for vehicles that have E85 sticker on it?
My Karma ran over your Dogma
Registered User
No it’s fine. E85 just means it’s an E85 capable system, it doesn’t mean you have to use fuel with ethanol content.This quote is hidden because you are ignoring this member. Show Quote
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