I have no intention of getting a ridiculous thread going, but I need to find
out the youngest and the elder-est lister...age span of the listers.
This will settle a bet with SWMBO.
Anyone in their 30's thru 60's keep still.
I hope this doesn't get out of hand.
Thanks
Bob R
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Subject: Re: [MBZ] Sorta OT: Octane rating question
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Hey Rich,
When I was out in Wyoming it was the same way and because my Passat requires
93 I was forced to run 89 because that was the highest I could get. The octane
rating being lower is because of the altitude and the only effect will be lower
performance and it was recommended that I find a octane booster to make up the
difference. Turbos on the other hand are not effected by altitude and the
engine computer will compensate for the lower octane. I did notice that diesels
don't even notice the thinner air and there were alot of diesel cars and trucks
there.
Harry
69 280 SEL 135,000 Miles
72 350SL 118,000 Miles
2004 VW Passat 4 Motion
1999 Mazda Miata
-----Original Message-----
From: [EMAIL PROTECTED]
To: mercedes@okiebenz.com
Sent: Thu, 4 Jan 2007 4:37 PM
Subject: [MBZ] Sorta OT: Octane rating question
So last week we motored to Colorado from the Republic of Texas (and
back, through Kansas). As we got to higher elevations I noticed the
regular gasoline octane rating went from 87 (here in TX) to 86 then 85
in the mountains. Premium octane ratings declined from 91 to 89, so you
would get the midgrade mix of 89, 88, 87. I tried to put 87 in, except
in places where they had run out of premium so all they had was the
lower octane stuff. Here in TX we switched to 10% ethanol when the MBTE
went away, I did not see any ethanol mixes up higher.
I got to wondering why this was. I was thinking it might have something
to do with altitude, and lower octane being OK, but that does not take
turbos into account. Or the MBTE/ethanol lack?
So, can someone explain this?
--R
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