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Replies: 28
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CU Medallion [54758]
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SRS lungey kweshun that I coulda googled but decided not to
Jan 13, 2015, 2:45 PM
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say you've gota a car that calls for 91 octane gasoline, but pump don't seem to ever have 91....could you (not that I would make this sort of effort, but...) pump half a tank of 89 and half a tank of 93 to average out to 91??
is gas like maths?
please to be responding lungily.
I'll wang up and glisten
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Heisman Winner [135579]
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There is actually a calculation that you can use.
Jan 13, 2015, 2:47 PM
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Basically, it should end up looking like this:
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Oculus Spirit [81061]
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Yes. Maybe.
Jan 13, 2015, 2:48 PM
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I've been told thats how they do it at the pumps; but I tend to disbelieve that story.
I'd just put all 93 in it. If its a newer car you could just run 87 in and it won't kill it; it just won't have all the power it should as the engine's computer will automatically ###### the ignition timing if it begins to pre-ignite.
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Hall of Famer [22718]
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Re: SRS lungey kweshun that I coulda googled but decided not to
Jan 13, 2015, 2:48 PM
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All-In [45047]
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I am sure you have already thought of this butt why not just
Jan 13, 2015, 2:48 PM
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go to a gas station that has 91 octane?
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All-In [28802]
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It's always 89 for the mid-grade, isn't it?
Jan 13, 2015, 2:53 PM
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I've never seen anything but 87, 89, and 93.
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CU Guru [1723]
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They have more 91 out west
Jan 13, 2015, 3:59 PM
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not many 93. 85, 87, 91 mostly.
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CU Medallion [54758]
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any reasoning behind this?***
Jan 13, 2015, 4:26 PM
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All-In [28802]
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Maybe gas is more expensive out there?
Jan 13, 2015, 4:51 PM
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The 93 might be too expensive to sell much of.
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CU Medallion [54758]
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All-In [45047]
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okay
Jan 13, 2015, 3:00 PM
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dad
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Oculus Spirit [75717]
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All-In [45047]
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Re: nice***
Jan 13, 2015, 3:01 PM
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CU Medallion [54758]
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All-In [45745]
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FYI regular gas and mid grade
Jan 13, 2015, 2:49 PM
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Come out of same truck. Higher price same gas.
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Heisman Winner [105551]
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I would just put diesel in it mixed with unicorn #####***
Jan 13, 2015, 2:54 PM
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CU Medallion [54758]
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soooo
Jan 13, 2015, 3:02 PM
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just keep doin what i be doin?
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Heisman Winner [105551]
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yes***
Jan 13, 2015, 3:08 PM
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All-In [26968]
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No, you need to put some 45 in and some 46 in.***
Jan 13, 2015, 2:55 PM
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CU Medallion [54758]
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do you even arithmetic?***
Jan 13, 2015, 3:04 PM
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Oculus Spirit [79429]
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Just use diesel, it takes a little more effort to get the
Jan 13, 2015, 2:58 PM
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Spout in the hole, but once you get it in there it's worth the fill up
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Heisman Winner [135579]
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Why wouldn't he just use the kerosene pump?
Jan 13, 2015, 3:00 PM
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There's never a line waiting to use it, you know.
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Oculus Spirit [78876]
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Legend [17753]
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Fill it with 93 and just lightly burn the top 2 octanes off.***
Jan 13, 2015, 3:01 PM
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All-TigerNet [12855]
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You can make yer own...
Jan 13, 2015, 3:06 PM
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3 parts Wild Turkey 101
2 parts jet fuel
1 part nitroglycerin
I haven't tried it yet, but I'd wear one of these just in case.
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CU Medallion [54758]
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I've got one, but it's in yellow....
Jan 13, 2015, 3:08 PM
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Here I am, pumping gas...
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All-TigerNet [10157]
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I've heard car sales folks say yes you can, but don't
Jan 13, 2015, 8:10 PM
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make a habit of it.... The most noticeable thing you would notice is the performance is not up to par.
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CU Medallion [60228]
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I have a car that calls for 93 Octane gas
Jan 13, 2015, 9:01 PM
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a Pontiac Grand Prix GTP 3.8L Supercharged V-6
210,000 miles later, it has never seen anything other than 87 Octane.
Still runs like a champ.
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Oculus Spirit [93668]
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Has anyone on this bored ever heard an engine knock?
Jan 14, 2015, 5:46 AM
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I'm not talking about rods knocking I'm talking about fuel knocks.
Since octane is a measure of a fuel's ability to prevent knocking by lowering it's heat range (making it burn cooler), I'd try a straight 87 then work my way up until it quit knocking.
If you can't hear a distinctive knock while the engine is running (wait, that's not a stupid as it sounds) and the engine shuts off when you return the key to the off position (see, I told you it wasn't as stupid as it sounds), you'll be OK with the lower octane.
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Replies: 28
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50
