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something like this would definitely interest me, around here there is no ethanol free or octane over 93, my car is tuned for 93 only. However getting a bump for certain events would be nice.

I will say this phenomenon with this single shell station has been for a while now, I just revisited it recently due to the nitro+ news because what the heck, but the issue I had maybe months ago when I last tried it out. So its either a long standing dislike my car has for it, or some long...

Originally Posted By: Bandito440 There's a Sunoco station nearby that will drop my average summer MPG from 28 to 24 every time. I can't explain that, but I fill up at a particular busy Mobil station almost exclusively now. After I confirm it is the station rather than the brand (though I could...

Originally Posted By: Cardenio327 I always try to use different stations and different brands. Maybe the station you use has rusty or dirty tanks. If it is a franchise maybe the owner puts in less additive, or the wrong additive, or no additive at all to save money. Often there is a choice of...

hmm I see. Well I'll definitely report back. I am not getting any codes but the roughness is enough that I can objectively tell. Especially when I first start the car and put it into reverse from any other gear, the RPM dips rather low, and that just doesn't happen with a tank full from that...

I notice that my car runs rougher with shell, but I always fill from the same one, which is cheapest, it looks like it gets business though.. when I fill with chevron the car runs smoother. This happened again after the shell nitro+ announcement. Wondering if maybe its just this shell station...