03-12-2013, 07:22 PM | #1 |
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Stay away from Costco gas
I've had issues with my fuels injectors in the X5M 3 times within 20k miles, I always suspect if it was related to Costco gas, since I exclusively use Costco gas for all of our cars. Never had any issues.
After the dealer replaced all the injector last time I decided to stay away from Costco gas as I've read other people had fuel related issues with Costco gas. After many hundred of miles, no issues cars runs great. I was running on fumes yesterday and the only gas station close by was Costco so I said what heck. Immediately afterward the car was not running right, felt sluggish and slow. Not very responsive at all. I forced myself to drive all over LA today, from 71 to 60 to 10 to 405 to 105 to 91. Traffic sucks! Used up about half of a tank and filled it up right away with Mobil gas. So all I can say is stay away from Costco gas! Last edited by mrpcar; 03-13-2013 at 07:09 AM.. |
03-12-2013, 11:44 PM | #2 |
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Me and my cousin both had misfiring 335s (common issue) that took quite a few dealer visits to fix (for me). They fixed mine over a year ago, but he still has problems to this day. He ONLY buys Costco gas, but I've never used it. And his misfires were always more severe than mine. He hates his car now because he gets a check engine light every time he accelerates hard, yet the dealer can't seem to fix it. I need to show him this, since I don't think he ever considered the fuel.
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03-13-2013, 07:11 AM | #3 | |
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03-13-2013, 08:06 AM | #4 |
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Interesting, since I only use Costco gas in my X5m and M3 without issue....knock on wood!
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03-13-2013, 08:22 AM | #5 |
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It could be just California, since we have all the stupid regulations with summer. winter blend etc etc... It may be all the high ethanol content that's causing the issue.
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03-13-2013, 12:24 PM | #6 | |
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Btw are you guys using these fuel injector cleaners (stp and similar) or other fuel additives ?
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03-13-2013, 03:18 PM | #7 |
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Only shell vpower 93 octane in my rides or BP if theres no shell around. I've always had my reservations about gas from costco, meijer and other no name places. Glad your trucks running strong again, was wondering why your 12 would be giving you all those injector probs
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03-13-2013, 04:07 PM | #8 |
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We too have the summer and winter blends with up to 15% ethanol, but the difference may be that we (and Costco in Ct.) have 93 octane available everywhere, and the occasional 94 in some Shell and Sunoco stations.
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03-13-2013, 11:22 PM | #11 | |
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How bout a Costco fuel test
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03-13-2013, 11:52 PM | #12 |
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Seriously how do I even go about going after Costco for the performance loss, loss of time taking the car to the dealers having to drive the loaner.
I still use Costco gas in my 911 and the Cayenne, both cars runs fine. Heck once in awhile I would use Costco in the Ferrari. Maybe it has to do with the direct injection? I've used fuel injector cleaners when I was having injector issue but not recently. Sort scared about upsetting the system. |
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03-13-2013, 11:56 PM | #13 |
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Get some gas and send it to a lab to be tested.
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03-14-2013, 10:58 AM | #15 |
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QT gas is my favorite gas, then Shell then Costco. Any three will do. I do not use BP if I can help it and the others don't get anything from me unless I am traveling and then its up to the gas gods
Never had any problems with Costco gas. |
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03-14-2013, 11:34 AM | #16 | |
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I think Atlanta gets better gas than we do in California. Our highest octane is 91. Also being the hub of pipeline storage Atlanta also have the cheapest gas. I've used Costco for the past 7 years, never an issue with any of our 5 cars until the X5M. Like others said it could be a BMW issue with their injectors. But it's too ironic and too coincidental that car ran fine after the last dealer visit and then immediately after Costco visit car ran like shit. But rather play safe than sorry, so no more Costco gas for me for now. at least not in the X5M. |
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03-14-2013, 09:02 PM | #17 |
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Yeah QT is great and their gas is as cheap if not cheaper than Costco. Also their 89 is rated lower than it is. It's about 91-92 octane. I forget you guys only get 91. Bah. California and their craziness. Lol
If the resulting problems happen at Costco then it's just smart to avoid. Maybe a bad batch or just the additives aren't playing nice with your injectors. If happens again and you have stayed away then process of elimination begins I hope that the issue is resolved though. Warranty or not it can be a hassle. |
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03-15-2013, 12:12 AM | #18 | |
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Its the process of elimination
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03-15-2013, 07:34 AM | #19 |
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I have learnt my less many years ago and only use tier 1 rated gasoline. I am in the northeast and use Shell exclusivly with zero issue.
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03-15-2013, 07:49 AM | #20 | |
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Ever since my incident I've done a lot of google search and found that there are many people whom also had fuel related problems with Costco gas. BTW, I am a big fan of Costco. I like the company, their service and products they offer. Hack, my reward check recently from them was $450. And I spent $6000 just on Costco gas last year. |
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03-15-2013, 10:07 AM | #22 |
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Ive heard reports on costco gas as well. for our Ms we use only mobil, chevron, or shell with no issues.
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