Costco Gas
Costco Hi test gas any good for the SS? Anyone know who makes it? Costco in my area selling for $3.09. Next lowest in my area is a BP for $3.79. Then 3.89 from a Shell. I will pay for the brand name stuff unless I know Costco is on par. Costco membership is $30 per year. I will join if the gas is good.:twitch:
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No personal experience or concrete data, so take what I say with a grain of salt, but I have a friend with a Mazda6 turbocharged 2.5 engine. He tried Costco premium gas and he thinks that the engine doesn't react as well to it as it does to Shell Nitro+ when he drives the car spiritedly(he took after me when it comes to driving, and I drive any car spiritedly).
It is technically Top Tier, so there is that. Someone with some data on knocking and timing should be able to speak more. |
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I absolutely would not run anything that is not Top Tier... |
As 2SS stated, Costco is a "top tier" gas. Plenty of documentation out there on it.
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Your good to go. Put it in both my 6.2's premium
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Until my SS went on a corn intensive diet, I bought all of my local gas from Costco. As others have stated, Costco gas is Top Tier, and in my area $0.50 - 0.60 less per gallon than corner stations, whether they are Top Tier or not. I'll stake my car running problem free and with damn good performance for about 4 years on Costco Premium as proof positive that it is good stuff.
The other cars in our household continue to run on Costco gas. Just not premium. |
I don't have a lot of miles on it yet but I run my 2021 ZL1 on Costco Premium. Only about 4k miles so far. I also ran it in my tuned Explorer Sport and was pushing about 450hp. So far its been great and the cost of their premium is worth the membership cost alone.
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24,000 miles using Costco almost exclusively. No problems at all.
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that's almost exactly me! No issues at 25000. I figure i've saved at least $750 using Costco vs local premium fuel prices. Don't really go out of my way for filling up the other car that uses regular. The price difference isn't as much. |
I've used Costco premium in my performance vehicles for years and several of my friends do also without any issues. Somehow all of that money we saved still found a way to make it into our cars though. :)
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I ran it once and runs the same as with Chevron. Problem in my area the lines are 20 minutes long and I get impatient..lol. I do need to use it more as the price difference is 60/70 cents less. Also A friend and fellow autocrosser has run it for years in his SS 1le and no issues.
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I'll jump om the Costco wagon. I use nothing but and have used 32000 miles worth of their premium fuel with no issues or concern. I'm saving .50 - .75 per gallon. Plus I know its fresh fuel as they sell a lot of it. Thus their fuel does not sit in the underground tanks very long.
OP - buy it, save the money and get excellent fuel. |
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