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Discussion Starter #1
After seeing the rave reviews for Shell V-Power, I decided to try it.

The first time was spectacular. The engine note was awesome and response was definitely improved. However, the second fill - at a different station - was subpar. It was sluggish and sounded terrible. I wonder if the owners were cheating the customers on what they were using. I mean, how many of us know what gas is really going in?

My last fill was with Sunoco's 93, and it gave almost as good a feel as the first V-Power. I think next time I'll try Chevron, just to give it a fair shake.

All in all, if I can get that awesome experience again I'll be V-Power for life!

Cheers!
 

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I agree. Unless you get some highly oxygenated MS-109 or something along those lines. Maybe even some 100 octane pump fuel may prevent the computer from pulling any timing giving maximum power.

I have access to an AWD mustang dyno. Maybe I'll arrange with the shop owner to do a pull with 91 octane, then 100 octane within an hour of each other to provide solid numbers.
 

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IMHO, differences between quality fuel brands are all placebo.
From my days with motorcycles where you could very much feel the difference in the seat of your pants, I found that premium fuels from reputable brands in newish stations were pretty much all the same. Premium fuel from stations that seemed likely to have the same octane as twigs led to predictable results. In the Denver area, we now have to pay attention to to how much alcohol is in the fuel though because some stations/brands add more than 10%.
 

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Discussion Starter #5
IMHO, differences between quality fuel brands are all placebo.
I also thought this, which is why I decided to try it. The difference between Valero and Shell was noticeable. As well as between Sunoco and Shell, although less so.

Granted, I've only sampled a few times, which doesn't prove much of anything - the V-Power could have just been a good batch. About 30 samples should be enough to determine if it's legitimately better, or so statistics would say.

It's a highly subjective test though. :rolleyes:
 

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I like to stick with the same gas, unless I have no other option at the time. I think the engine gets used to it.

On the same thought, some say switch every 5 fill-ups.

What are your thoughts?
 

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Assuming we're sticking to premium petrol, I've never noticed any difference whatsoever between fuel brands other than the presence or absence of knocking, though with premium there's never knocking. I often use Shell V-power, or other popular brands around Chicago, and maybe I'm imperceptive but my engine doesn't seem to know any difference.
 

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I believe Ferrari / Maserati recommends Shell-V power, of course there could be a possible link between fuel recommendations and advertising dollars. All the same... I stop at the Shell station for all my “high-octane” toys
 

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Our local supermarket gives shopping points for up to 10 cents a gallon off at Shell
 
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