I think you need to test another costco to see if all locations is like that. where is this costco located?
2026-05-31 14:21:24
838
JJ :
Everyone is so quick to defend Costco. They are overrated and prices are not as good bs what people perceive.
2026-05-31 15:58:25
439
ripley935 :
Been using only Costco gas in my Camry for 6 years straight. 220,000 miles, zero issues and I still average 35 mpg 👍
2026-06-25 15:07:52
426
Caleb B :
Chemist here. The turbidity (“cloudiness”) in this test doesn’t prove anything. The only thing it shows is that Costco uses a different additive package (which includes detergents) than other gas stations. This test is ONLY meant to show ethanol content. That’s it. Everything else is conjecture. Thank you for your attention.
2026-06-27 18:08:55
345
Ruben Zepeda :
can you test the rotisserie chickens?
2026-06-26 16:51:55
213
Nickag1977 :
I thought Costco gas was top tier gas?
2026-06-02 03:44:59
184
Cha :
Please do Sam’s Club next!!!
2026-06-01 01:41:20
129
basicmidwestmama :
It's listed as top tier though. This is very bothersome!
2026-05-31 22:16:15
95
T Jones :
Could be that specific holding tank. I’ve tested Costco in the past and it’s as clean as Sunoco.
2026-05-31 14:13:13
65
c dub :
id still buy costco 😂. never had issues
2026-06-01 02:44:59
50
Steve386 :
You better call Top Tier fuel with your findings. They’ll be more than happy to investigate your claims and pull the certification from Costco if your findings are correct.
2026-06-25 23:51:48
37
CaliGirl :
No wonder why Costco gas is cheaper than all the other gas stations
2026-05-31 13:31:17
29
fun times :
So that's why i get less miles on Costco gas
2026-06-01 03:14:58
25
Lee Sheppard :
I am a fuel truck driver and we all get the fuel from 1 of 10 loading racks. They go through so much gas at Costco that it does not sit around. I have to say this is a fluke and you should try other Costcos. The only difference from one fuel to another is the additives or ethanol amount added at time of loading.
2026-06-25 16:27:20
25
JohnV :
I have a 93 impreza. I've had it for almost 30 years. I use Costco gas 99% of the time. my car is still running. no issues end of story. maybe its your costco gas station.
2026-05-31 19:42:50
25
Darrell Henio :
That gas is eating the plastic bottle sir. That’s what you are seeing. You should use a glass bottle for your test.
2026-06-26 02:15:51
22
Wolverinem :
I’ve been buying Costco gas for 20 years and never had an issue
2026-06-01 00:02:20
21
Winesnobb :
I was told by a mechanic not to use Costco gas
2026-06-01 12:00:41
20
noobiePixa :
Update on the Costco gas?
2026-06-25 12:32:12
16
Kymberlyn Lacy :
Can you do Sam’s
2026-06-01 11:39:13
12
Jules0527 :
Have you done Sam’s Club? That’s usually where I go. Or Kroger if I have points to use.
2026-05-31 14:59:49
10
Casey Loughlin :
@Costco Wholesale Shame on yall
2026-05-31 13:25:18
9
Luis :
He never posted second video
2026-06-25 15:51:42
8
Loren 💚❌ :
Thank you for doing this work!! I appreciate you
2026-05-31 14:49:46
7
Sicilian.Irish.NY :
its still 30 cents cheaper and i dont notice any performance issues. this was probably a one off situation
2026-06-02 00:46:50
7
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