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GLD 443.60+1.5%Jan 21 4:00 PM EST
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To: Slagle who wrote (457)9/13/2005 9:44:47 PM
From: Elroy Jetson  Read Replies (1) of 219610
 
The purpose of adding 5.7% ethanol to gasoline is indeed to retard ignition (raise octane) and to provide oxygen to the mixture to ensure cleaner burning.

The problems of water condensation in gasoline tanks has long been a problem. This occurs in storage tanks at the service station and in the automobile. For this reason, fuel tanks are designed so that the liquid at the very bottom of the tank, where water settles, are not used.

Ethanol or MTBE in gasoline can dissolve a portion of this accumulated water into the gasoline. Fuel tanks which have built up corrosion, can deliver part of this corrosion to the engine when gasoline containing MTBE or ethanol are used. This is why fuel filters were added to cars built in recent decades. Older "antique" cars do not have the filtration system required to protect their engines - although it would be wise to add this non-period touch.

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