Don,
If I remember correctly ethanol has an octane rating over 100-110
or so. I'd have to look it up. Anyway when the ethanol is added
to gas you can see that it will bring the octane of the gas up
for less cost then probably anything else. Unfortunately it also
brings the mileage that you get down proportional to the amount
of alcohol in the gas. Back in the day if you used alcohol for
racing I think the rule of thumb was you had to drill out the
jets in the carb out 10-20% larger to keep your speed and power.
Can't remember exactly any more.
Manfred
Donald Snook via Mercedes wrote:
Anybody know anything about E30. There is a gas station I drive by frequently that has E10, E20, and E30. The E30 was 93 Octane but was even cheaper than 87 E10. Ethanol has higher octane and plain gas, so that explains the higher Octane. I know some gas stations advertise that they sell only 100%. But, is E20 and E30 harmful because of the higher ethanol?
Don Snook
-----Original Message-----
From: Curley McLain [mailto:126die...@gmail.com]
Sent: Saturday, July 01, 2017 12:43 AM
To: Mercedes Discussion List <mercedes@okiebenz.com>
Subject: Re: [MBZ] Fuel Mileage Premium v. Regular Experiment
I never had that problem using 89 E10 regular
Peter Frederick via Mercedes <mailto:mercedes@okiebenz.com> June 29,
2017 at 7:21 AM There is also the point that using mid-grade in my TE
burns off the spark plug electrodes, too -- no knock sensor. I always
use premium in it, just the cost of having a Benz.
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