Feb 7, 2007 2:17:07 PM
Feb 7, 2007 2:18:44 PM
Feb 7, 2007 2:21:14 PM
Feb 7, 2007 2:35:53 PM
Feb 7, 2007 2:41:28 PM
Feb 7, 2007 2:45:56 PM
Quote:
easy_rider911 said:
Porsche also recognizes that these fuels may not always be available. Be assured that your vehicle will operate
properly on unleaded premium fuels with octane numbers of at least 95 RON (90 CLC or AKI), since the engine's "Electronic Oktane knock control" will adapt the ignition timing, if necessary."
So, honestly, no doubt here, PAG itself says your car will run just fine on 90 AKI.
Feb 7, 2007 2:46:46 PM
Feb 7, 2007 2:55:23 PM
Feb 7, 2007 4:26:25 PM
Feb 7, 2007 4:33:46 PM
Feb 7, 2007 5:13:00 PM
Feb 7, 2007 5:14:49 PM
Quote:
edz61 said:
If you live in Southern CA, Unical 76 in south OC, corner of La Paz and the 5 freeway sells 105 octane gas.
Feb 7, 2007 8:38:51 PM
Quote:
69bossnine said:
At higher altitudes with thinner air, the octane ratings available decrease proportionately. Wherever you're at, going with the "Premium" offering at the pump should do you fine...
Feb 8, 2007 2:25:14 AM
Feb 8, 2007 7:44:50 PM
Feb 8, 2007 9:25:40 PM
Quote:
mvd said:
Not sure I follow the logic that octane and altitude are related.
Octane ratings are measured on a single cyninder engine in a lab. Done the old fashioned way with a lab tech adjusting a blend of ref fuel which includes iso-octane (= 100).
The US reports octane as the ave of two numbers: the research octane number (RON) and the motor octane number (MON). Both are measured under different loads and at different RPM's. Nothing special about either method. A typical US gasoline might be measure 85 on MON scale and 93 RON. Check our the pump the next time you fill up and you'll see the octane labeled as (R+M)/2.
Winter gasoline includes butane to increase the vapor pressure for those living in cold climates. Butane also helps the refiners meet their octane targets as it is a high octane blending component. Ethanol is a whole different subject but let me just say that it's in your gasoline because of the success of a very powerful lobby. While it's good for energy independence, it's a dasaster in all other areas (think pollution, CO2 make, price of tortillas).
Dr Dave
Feb 8, 2007 10:50:55 PM
Feb 9, 2007 2:42:00 AM
Feb 9, 2007 3:19:12 AM