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2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 04-07-2008, 08:11 PM   #31
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Quote:
Originally Posted by harofreak00
you don't know what octane you are putting in?
Another VERY good point, low octane will drop MPG. I get a good 2 or more MPG with 93 over 87.

I also get about 3 or 4 more with out that ethanal. I hate that stuff. 10% less gas gets me about 12% less MPG.

Watch the pump, there shoudl be a sticker stating if ethanal is added
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Old 04-07-2008, 08:12 PM   #32
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No need to run 93 in an L36. I just want to make sure you aren't using E85.
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Old 04-07-2008, 08:13 PM   #33
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Originally Posted by gonzo4191
ohhh...89 (Duh) dont have money for the higher up stuff
Dude... You get better milage with the good stuff, it comes out the same, but is better for the engine.
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Old 04-07-2008, 08:13 PM   #34
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hmmmm, gee i love this site , come to think i dont think they use ethonal across the street, ill fill up with some 93 before the trip to minnesota this saturday and sunday
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Old 04-07-2008, 08:36 PM   #35
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Quote:
Originally Posted by Danthurs
Quote:
Originally Posted by gonzo4191
ohhh...89 (Duh) dont have money for the higher up stuff
Dude... You get better milage with the good stuff, it comes out the same, but is better for the engine.
higher octane fuel will do nothing for your mileage unless you are gettin KR with low octane.. it'* simply harder to combust (to prevent detonation (KR))
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Old 04-07-2008, 09:14 PM   #36
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Quote:
Originally Posted by Bonnevillan
Quote:
Originally Posted by Danthurs
Quote:
Originally Posted by gonzo4191
ohhh...89 (Duh) dont have money for the higher up stuff
Dude... You get better milage with the good stuff, it comes out the same, but is better for the engine.
higher octane fuel will do nothing for your mileage unless you are gettin KR with low octane.. it'* simply harder to combust (to prevent detonation (KR))
x2... Gonzo, no need to run anything besides 87 or 89
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Old 04-07-2008, 09:16 PM   #37
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yea i read that,thanks everyone....

and my name is JUAN :P
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Old 04-07-2008, 09:18 PM   #38
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On my last highway trip in my 2000 SE, here are my specs:

Intake Air Temperature: 60*F
RPM: Averaged 1905
Speed: Averaged 72 MPH

Gas Mileage for 117 mile stretch: Average 34.5 MPG

Trip Average: 255 miles, 31.57 MPG. Did a bit of running around between the two, long highway drives.

Used an OBDII scan gauge to get the above information.

Your SE is definately having some issue'* if your still averaging that low. I'd try to gain access to a nice OBDII realtime scanner to check out specs once your vehicle is fully warmed up, it will tell you a lot of information.
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Old 04-07-2008, 11:13 PM   #39
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what brand of o2 sensor do you guys recommend??
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Old 04-07-2008, 11:20 PM   #40
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Delco or Denso, Delco preferred heavily though.
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