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02-02-2014, 07:46 AM | #1 |
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Gasoline Choices
Where I live in the summer, (out in the sticks in Central Oregon) unleaded 91 is my only choice. I also can easily get 100 octane leaded avgas.
For a Vortec supercharged engine would adding a octane boosted work or should I use a 91 unleaded and 100 avgas blend? And is so, what ratio? |
02-02-2014, 08:03 AM | #2 |
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DO NOT put leaded gas into theses cars
91 will do just fine . Someone will chime in on the reasons |
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02-02-2014, 08:43 AM | #3 | |
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Quote:
I'm not wanting an all out race car, just a fun daily driver I can take to the track. So with a good Dyno tune 91 is OK with the Vortec? |
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02-02-2014, 09:37 AM | #4 |
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Wouldn't the lead potentially foul up the plugs?
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02-02-2014, 09:45 AM | #5 |
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You have easier access to 100oct than e85?
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02-02-2014, 10:20 AM | #6 |
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Just run 91 like the 40 million people in California do.
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02-02-2014, 11:25 AM | #7 |
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02-02-2014, 11:45 AM | #8 |
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I had no choice but to fill up at a 7-11 the other day, I chose 91 of course but after the fill up, I noticed the car seemed to be lacking, I have my speculation, I think the 7-11 charged me for 91 octane but ended up giving me 87 or 89. At any rate, it prompted me to try doing a blend with 100 octane, just to make sure I was getting at least 91, but I was shooting for a 93 octane blend. just so happens there is a VP gas station a block away from my house that has 100 octane VP street blaze it is unleaded. I talked to the guy working there to get his thoughts on the blend ratio. he told me if you run 91 and you go with a 50/50 mix of 91 and 100 octane, the result is 95 octane, so he told me to run a 70/30 mix to acheive 93octane. needless to say I noticed a tremendous difference in power right after adding the 100octane. I wouldn't make it a normal thing to do just because the price ($8.89/gallon for 100octane)
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02-02-2014, 11:54 AM | #9 |
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02-02-2014, 12:00 PM | #10 |
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Kay I honestly don't understand most people in the US are using 91 octane fuel unleaded. I own a toyota 86 FT in argentina, and the owners manual says.
Fuel type : unleaded Octane number: 98 or higher If 98 NOI it's not avaialbe in you region, you may use a 95 octane NOI without affecting durability of the car. How come ? I don't get it what do your owners manual say. Cause the engine it's the same on my car and on SCION FRS |
02-02-2014, 12:07 PM | #11 |
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yes, I think it was all in my head, Its the first time I have not fueled at either a Shell or a Chevron, and I have my reservations. I always hear from others there is no difference in gasolines, all gas comes from the same place etc etc. I still have my conspiracy theories though lol
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02-02-2014, 12:14 PM | #12 | |
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Gasoline Choices
Quote:
Our manual says to use 93 octane. If that is not available, 91 octane can be used as a substitute. We most likely have a different octane rating system than yours. I know US 90-94 octane rating is equivalent to European 95-99 octane. It may the same in South America as well. Sent from my iPhone using Tapatalk
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02-02-2014, 12:21 PM | #13 |
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So you're saying that the octane rating here it's lower than in the US ? like 91 from the US would be equivalent to 98 ?
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02-02-2014, 12:41 PM | #14 | |
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Quote:
There's a tank farm near QCOM stadium where various brands fill up with generic gasoline. The driver then plops a brick of aptly named "additives" in the tank and shoves off for his first delivery. How the brick is supposed to dissolve and mix in uniformly with a tank full of fuel in time for the first station down the road is anybody's guess. I've never had any problems with Costco fuel. Somehow I trust them more than the fru-fru brands. They certainly have the freshest fuel since half the time I see a tanker unloading. I can't remember the last time I saw a tanker at a Chevron station as I drove by... |
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