Anywhere in San Jose that sells high octane fuel?
08-25-2009, 05:30 PM
#1
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Anywhere in San Jose that sells high octane fuel?
Does anybody know where I can get high oct gas such as 102? I know it's going to be expensive, but I just wanted to give it a try since our gas here in CA sucks for our engines and turbos. I heard from a buddy that shell in Pac commons has the 102. If so, does anyone feel a difference compared to 92 octane.
08-25-2009, 08:27 PM
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If you tune for it then you will feel a difference. If you are not tuning for it, then I believe it was up to somewhere between 94-96 Octane that ECU can actually take advantage of. So if you are going to run it, then you are going to end up with a mix.
You will hear a lot of people saying that it will make a difference and a lot of people saying it won't make a difference. To me, when I tried it as a mix I did notice a difference. Unfortunately that is using the butt dyno so while my car was a lot smoother idling and felt quicker it is hard to say exactly how much of a difference it really made. However if you have ever driven out of state and driven on 93 or 94 octane vs the CA 91 octane you will be able to see just what kind of a difference you could probably expect from running the mix.
BTW - There is a gas station in Sunol (Between Fremont and Pleasanton off of 680) right off the freeway that sells all types of octanes right now.
You will hear a lot of people saying that it will make a difference and a lot of people saying it won't make a difference. To me, when I tried it as a mix I did notice a difference. Unfortunately that is using the butt dyno so while my car was a lot smoother idling and felt quicker it is hard to say exactly how much of a difference it really made. However if you have ever driven out of state and driven on 93 or 94 octane vs the CA 91 octane you will be able to see just what kind of a difference you could probably expect from running the mix.
BTW - There is a gas station in Sunol (Between Fremont and Pleasanton off of 680) right off the freeway that sells all types of octanes right now.
08-25-2009, 09:59 PM
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If you tune for it then you will feel a difference. If you are not tuning for it, then I believe it was up to somewhere between 94-96 Octane that ECU can actually take advantage of. So if you are going to run it, then you are going to end up with a mix.
You will hear a lot of people saying that it will make a difference and a lot of people saying it won't make a difference. To me, when I tried it as a mix I did notice a difference. Unfortunately that is using the butt dyno so while my car was a lot smoother idling and felt quicker it is hard to say exactly how much of a difference it really made. However if you have ever driven out of state and driven on 93 or 94 octane vs the CA 91 octane you will be able to see just what kind of a difference you could probably expect from running the mix.
BTW - There is a gas station in Sunol (Between Fremont and Pleasanton off of 680) right off the freeway that sells all types of octanes right now.
You will hear a lot of people saying that it will make a difference and a lot of people saying it won't make a difference. To me, when I tried it as a mix I did notice a difference. Unfortunately that is using the butt dyno so while my car was a lot smoother idling and felt quicker it is hard to say exactly how much of a difference it really made. However if you have ever driven out of state and driven on 93 or 94 octane vs the CA 91 octane you will be able to see just what kind of a difference you could probably expect from running the mix.
BTW - There is a gas station in Sunol (Between Fremont and Pleasanton off of 680) right off the freeway that sells all types of octanes right now.
However, after a buddy of mine and I ran 100 octane (both cars were tuned for it) we noticed smoother idle for the next tank or two.
08-25-2009, 11:02 PM
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And who do you hear this from and how do they measure it? A 15 gal tank with 3 gallons of 91 and 12 gallons of 100, would equal 98.8 octane. A 12 gallon (about the size of an evo x tank) with 2 gallons of 91 and 10 gallons of 100, would equate to about 98.5 octane.
Last edited by VRT MBasile; 08-26-2009 at 09:53 AM.
08-26-2009, 08:10 AM
#13
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Don't run the 76 gas 100oct regularly for too long. Made my plugs coated with a red colored residue, AHQ told me to stop using octane booster but it was just 100 mix with 91! 
My car ran great however with 93 Octane from VP gas stations.
There is a new one in San Jose corner of Camden Ave & Bercaw Ln.
http://maps.google.com/maps?f=q&sour...12,154.43,,0,5
My car ran great however with 93 Octane from VP gas stations.
There is a new one in San Jose corner of Camden Ave & Bercaw Ln.
http://maps.google.com/maps?f=q&sour...12,154.43,,0,5
08-26-2009, 08:11 AM
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Good V-Dub thread on this topic: http://forums.vwvortex.com/zerothrea...int&id=3851992
08-26-2009, 08:23 AM
#15
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a 15 gallon tank with 3 gallons of 91 and 13 of 100 would also overflow with that extra gallon.