What gas to use? - Page 3 - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum
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post #21 of 449 (permalink) Old 12-14-2005, 10:05 AM
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aaah, yes, 87 was a good year, i remember it well.

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post #22 of 449 (permalink) Old 12-14-2005, 02:14 PM
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I put in 93 all the time and a bottle of 108 octane booster every tank. It makes my radio come in much clearer and I also found that it makes my seat warmers warm up much faster.


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post #23 of 449 (permalink) Old 12-15-2005, 02:30 AM
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hahahaaa funny post that last one.


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post #24 of 449 (permalink) Old 12-17-2005, 11:15 PM
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I get about 3 miles per gallon less on 89 (10% ethanol) then I do on 87 on average. Ive done 3 tanks on each and the results are consistant 16-16.5 on 89, and 19-20 on 87. I've also noticed that it seems as though i get a bit more pull in the low rpms with the 87. I did 2 tanks on 91 and nothing changed between that and the 87 so I quit "testing it" as it was ~ $4-5 more per tank of gas. I havent raced it though so go fig. If i do ill use 91 probably. There is a gas station that sells "120" racing fuel.. lol, but i have yet to test this. Seems kind of pointless anway and it was well over $3 per gallon last year.

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post #25 of 449 (permalink) Old 12-18-2005, 10:25 PM
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I get about 3 miles per gallon less on 89 (10% ethanol) then I do on 87 on average. Ive done 3 tanks on each and the results are consistant 16-16.5 on 89, and 19-20 on 87. I've also noticed that it seems as though i get a bit more pull in the low rpms with the 87. I did 2 tanks on 91 and nothing changed between that and the 87 so I quit "testing it" as it was ~ $4-5 more per tank of gas. I havent raced it though so go fig. If i do ill use 91 probably. There is a gas station that sells "120" racing fuel.. lol, but i have yet to test this. Seems kind of pointless anway and it was well over $3 per gallon last year.
[/b]
The by-product of poor gas milage with 89 compared to 87 is "performance" ... I think it was car and driver that stated our cars are "thirsty" and have "...gas guzzeling performance" ... there you have it ... poor gas milage on the 6s = sweet spot performance!!!

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post #26 of 449 (permalink) Old 12-25-2005, 12:41 PM
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yea they say compression and all that affects it..however

my engine has the same bore, stroke, compression as my brother's maxima

his is reccomended for high octane fuel


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post #27 of 449 (permalink) Old 12-27-2005, 06:52 PM
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yea they say compression and all that affects it..however

my engine has the same bore, stroke, compression as my brother's maxima

his is reccomended for high octane fuel
crazy
[/b]

bore, stroke, and compression are not just the only factors.

What do you drive, anyways? And which maxima are we referring to?

What about spark timing and all that, that's very important as well.
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post #28 of 449 (permalink) Old 12-30-2005, 01:34 PM
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Hi, im just wondering what octane gas I should use. In the owners manual is says to use 87, but to my knowledge isn't 91 always better. 91 octane is supposed to be for, correct me if im wrong higher compression motors. So does the V6 mazda 6S motor need 91 or is it just a waste?

I also know if the motor is supposed to use 91 and you use 87 it will throw on the "check engine" light, because the emissions sensor will read incorrectly if 87 is used. I'm currently using 91, but I really dont want to waste money if its not going to really matter.

Thanks!!!!!!!!
[/b]

Here is a link to help you decide for your self. Link for octane (gas) knowledge. Tell me if this helps.
http://www.ftc.gov/bcp/conline/pubs/autos/octane.htm



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post #29 of 449 (permalink) Old 01-03-2006, 05:44 AM
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lol, here in Germany the lowest octane we have is 92. We have 92, 95, 99 and 100. And for the 4-cyl we have to take the 95 minimum.
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post #30 of 449 (permalink) Old 01-03-2006, 08:47 AM
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lol, here in Germany the lowest octane we have is 92. We have 92, 95, 99 and 100. And for the 4-cyl we have to take the 95 minimum.
[/b]
Somebody correct me if I'm wrong, but I believe the way Germany rates their octane levels is different from the way that North America rates octane. If so, your 92 is not the same thing as our 92.


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