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Junior Member
Join Date: May 2005
Posts: 9

I live in SOCAL amd the highest octane is 91 so that's what I usally put in. I have been using Shell (V-Power) sometimes if there isn't a Shell around I will use Chevron. With everyone's experience which is the best Shell, Chevron, Mobile, 76, etc. Have a 2001 325I, would Redline Fuel Cleaner be OK to use in that car? I know some say that if you use the premium gs you shouldn't have to use cleaner, but I would think even with the good stuff there is still some build up. Does anyone know of a good gas article?

Old 07-29-2005, 07:30 PM
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KNS KNS is offline
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Join Date: Jan 2004
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You'll probably hear that all gas comes from the same place, just buy whatever... Well, that's true to a point. The individual companies put their own additives and detergents into the gas and that's where the real difference comes from. As long as you buy from one of the name brand suppliers (Chevron, Shell, etc. ), you're okay. Try to avoid cheap, X-brand gas.
I also use Redline or Techron fuel system ceaner every now and then, especially right before a long road trip.
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Old 07-30-2005, 02:11 PM
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Jeron's Avatar
Join Date: Feb 2004
Location: DFW (Hurst), Texas
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KNS is correct it all comes from the same depot but each brand adds their own additive package.

I read on Chevron's website that if you exclusively use their Premium with Techron there is no need to use the Techron additive. I assume the same is true for other Top Brand stations.

As far as articles I would start with the Shell and Chevron websites but view their claims with some skepticism. I've read a few independent articles on gas in the last few years but I don't have them bookmarked.

I stay away form the worst stations and I particularly don't like old stations. I want a station with clean underground tanks and fresh filters. I buy almost exclusively from Racetrac and QT. In a perfect world where all prices were the same I would probably buy 75% Chevron and 25% Shell, just to mix it up.
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Old 08-01-2005, 08:18 AM
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I agree as well, with the exception of the fact that if I'm driving an old car that I don't really care too much about, it's off to the discount station for me.

Shell and Chevron are so expensive sometimes compared to places like Arco, that it's hard to justify the difference sometimes.

Theoretically, your car should adjust to lower octane gas by retarding the timing. See this article I wrote here:

Basically, your power will be down, as the car retards the timing, but it should still theoretically run fine. The problem is with high compression engines - sometimes they may have too high a compression ratio and not be able to retard enough to prevent pinging.

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Old 08-01-2005, 10:37 AM
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