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Old 04-13-2012, 01:21 PM   #41
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I am a gasoline and diesel trader so I follow this but the ethanol part gets tricky there are a lot of schenanigans going on there
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Old 04-13-2012, 01:25 PM   #42
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Quote:
Originally Posted by 675Raisinator View Post
yea I thot it was odd too ... but my mileage is wayyy better when i fill up at this one valero....

ethanol splashing is not an exact science some places toss in too little others toss in just enough and most toss is too much
There's no gaurantee that, because the sign says valero, that you're getting "valero gas."
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Old 04-13-2012, 01:27 PM   #43
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Quote:
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I get less MPG on Valero gas. I have tracked my mileage extensively to come to this conclusion. They are only slightly ahead of Murphy. That leads me to assume their ethanol content is the reason.
I've noticed the same thing with Valero and avoid it if at all possible. Ethanol should be illegal.
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Old 04-13-2012, 01:30 PM   #44
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Quote:
Originally Posted by po-po 5.0 View Post
There's no gaurantee that, because the sign says valero, that you're getting "valero gas."
yes and no ... if it is valero branded station they are going to be buying valero branded or unbranded gasoline only from the rack but those guys could have bot it from BP or exxon or houston refining or some trader imported it and blended it to US spec ... the ethanol isnt splashed in until it gets to the rack in some places and in others the ethanol is dumped into the tanks when the truck pulls into the station so a lot of games go on there they have found folks putting as much as 20% ethanol in bc that is soo cheap ... the way they found out ? folks cars started breaking down
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Old 04-13-2012, 01:35 PM   #45
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Quote:
Originally Posted by 675Raisinator View Post
yes and no ... if it is valero branded station they are going to be buying valero branded or unbranded gasoline only from the rack but those guys could have bot it from BP or exxon or houston refining or some trader imported it and blended it to US spec ... the ethanol isnt splashed in until it gets to the rack in some places and in others the ethanol is dumped into the tanks when the truck pulls into the station so a lot of games go on there they have found folks putting as much as 20% ethanol in bc that is soo cheap ... the way they found out ? folks cars started breaking down
Ethanol is only "cheap" because of government subsidies. If it weren't for the subsidies, ethanol prices would be through the roof. Ethanol cannot sustain itself. A gallon of ethanol produces less energy than it takes to refine it. The can't even make ethanol WITH ethanol.
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Old 04-13-2012, 01:38 PM   #46
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Ethanol is only "cheap" because of government subsidies. If it weren't for the subsidies, ethanol prices would be through the roof. Ethanol cannot sustain itself. A gallon of ethanol produces less energy than it takes to refine it. The can't even make ethanol WITH ethanol.
yep
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Old 04-13-2012, 02:55 PM   #47
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if the owners manual says to use 87, then 91 or 93 will do nothing but decrease your power. higher octane does not mean it's cleaner, it means that it burns slower resulting in less detonation on high compression or pre-ignition on advanced timing engines.

87 burns faster so actually results in slightly more power as long as your bike does not suffer from knocking or pinging from one of the above scenarios
this.^^^^^^^^
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Old 04-13-2012, 03:00 PM   #48
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Old 04-13-2012, 03:07 PM   #49
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I run 87 on all my bikes never had a problem I always see cats and they say "I only run 93 cause it's better"
I race on 87 most of the time and it makes more power on the dyno. Sold
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Old 04-13-2012, 03:19 PM   #50
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Quote:
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Shiitttt. 87
yea i meant the lowest lol, got confused
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Old 04-13-2012, 05:18 PM   #51
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Quote:
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I race on 87 most of the time and it makes more power on the dyno. Sold
Even in the middle of summer? I would think high c/r and high iat's would knock on 87.

I'm gonna run 89 in my next tank and see how it runs.
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Old 04-13-2012, 09:09 PM   #52
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I just use Regular, Then again the old KZ doesn't have a high Compression Ratio at all.
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Old 04-14-2012, 01:20 AM   #53
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All this talk of "hearing" knock or pre-ignition.. if you can hear it it has gone way past the point of bad.

Minor knock will loosen the carbon from the pistons and fuse to the porcelin of the plugs.. if you run 87 all the time, it's a good idea to examine those plugs real close when you change them, especially the center pair off inline 4's.

That being said, the lowest octane you can run without preignition will make the most power.

I run 87 except in the hottest months of summer then I step it up to mid or premium just to make sure.


Now, relying on the knock sensor in your car and running the cheapest gas is a terrible idea. The knock sensor pulls timing at the slightest hint of knock (which you can't hear) and will pull 8-10 degrees out until the knock clears.. resulting in massive power loss and crappy mileage.
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Old 04-14-2012, 01:32 AM   #54
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I always just asked Patrick. Even on my ex-wife's 93 Katana he recommended 93 octane. I didnt ask why cause I didn't care. I just take it to heart the man know more than I will ever know and took his word for it. The bike ran like a champ too, probably better than it did new after he had his hands on it.
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Old 04-15-2012, 03:43 PM   #55
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Quote:
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Even in the middle of summer? I would think high c/r and high iat's would knock on 87.

I'm gonna run 89 in my next tank and see how it runs.
Yup. Middle of summer. I'm running higher now that I have built the 1441 motor.
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Old 04-15-2012, 05:30 PM   #56
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Is this still being discussed?! This should be taught in Drivers Ed or school. Simple, use what your manual says, especially if you don't understand what octance, detonation, ping or knock means.
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Old 04-18-2012, 04:24 AM   #57
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Quote:
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I race on 87 most of the time and it makes more power on the dyno. Sold
Tell me you're not running 87 oct in that 13.5-1 1441...

Especially murpheys...
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Old 04-18-2012, 05:25 AM   #58
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Old 04-18-2012, 06:01 AM   #59
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Quote:
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Tell me you're not running 87 oct in that 13.5-1 1441...

Especially murpheys...
Poblem found ?? Lol
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Old 04-18-2012, 07:16 AM   #60
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Quote:
Originally Posted by devious biker View Post
whats a couple of extra cents when filling up a motorcycle. Doesnt hurt at all to use the premium gas dammit. Dont cry over 60 cents extra.

It actually hurts power production, and 60 cents a gallon adds up if your ride a lot.
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