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Old 11-20-2003, 01:32 AM   #11
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Quote:
Originally Posted by 2000SilverBullet
.....unless you are telling me that raising the octane rating to 95 or higher will allow running higher pressure without knock retard.
that or less knock retard at current boost levels
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Old 11-20-2003, 01:42 AM   #12
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Correct. The PCM will run with more advanced timing assuming you're using a higher octane.
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Old 11-20-2003, 02:31 AM   #13
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You guys made me go look something up. I remembered reading in my Aurora GM service manual that it had a list of what I could add to the fuel and what max % per tank.

Alright, I could of swore tuleane was on there put it'* not. Now from GM

-Methl Tertiary-Butle Ether (MTBE)
Fuel containing Methyl Tertiary-Butle Ether (MBTE) or grain alcohol man be used, providing that there is no more than 15% alcohol by volume.
-Ethanol
Fuel containing ethanol (ethyl) or grain alcohol man be used, providing that there is no more than 10% alcohol by volume.
-Methanol
Fuel containing methanol (methyl) or grain alcohol man be used, providing that there is no more than 5% alcohol by volume.
-Notice: Do not use fuel that contains more than 5% methanol. Use of a fuel (gasohol) that contains more tha 5% of methanol can corrode metal fuel system components and damage plastic and rubber parts.
-Notice: Do not spill fuel containing alcohol on the vehicle. Alcohol can cause damage to the paint finish and the trim.

So, I've thought about adding something to my gas, lately. I sometimes get 100 octane at two different places. Question now which is better, one says they add MTBE and the other place is methanol. Roadpilot and a citgo. both $3.10ish gallon.

So I'm glad I just looked that up in the olds aurora manual. I just realized that, Actually forgot all bout it that the maunal is an Aurora/rivera. I have L67 info too. Lots of reading to do. The info I posted above was for the 4.0, the info wasn't there on the L67.

my 4 cents.
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