Had anyone used Costco gas for your Outie? Did you guys notice any difference in performance between from using the brandname gas and Costco's?

 

Should not matter at all, bulk gasoline is bulk gasoline, just different additives are blended to the re-seller's desires before it is shipped to them. Bulk gasoline must meet the standards set for it.

 

Good point but my concern is about how clean the gas is. I've been using Shell ever since and I am confident that there are less carbon deposit in my engine compared to using cheap gasoline but the price of gas getting more and more expesive, I am having a second thought.

 

I've been exclusively using costco gas since 2008 on our outie and now on our 2010 lancer gts sportback. I've had no issues. I would actually put more credence to Chevron's gas with techron in terms of quality.

 

I just check with Costco(Toronto/Scarborough) and they said the gas is coming from Shell, so I guess it would be OK.