6.18 How can I increase the fuel octane?
Description
This article is from the Gasoline FAQ, by Bruce Hamilton with numerous contributions by others.
6.18 How can I increase the fuel octane?
Not simply, you can purchase additives, however these are not
cost-effective and a survey in 1989 showed the cost of increasing the
octane rating of one US gallon by one unit ranged from 10 cents (
methanol ), 50 cents (MMT), $1.00 ( TEL ), to $3.25 ( xylenes )
[108]. Refer to section 6.20 for a discussion on naphthalene (
mothballs ). It is preferable to purchase a higher octane fuel such as
racing fuel, aviation gasolines, or methanol. Sadly, the price of
chemical grade methanol has almost doubled during 1994. If you plan
to use alcohol blends, ensure your fuel handling system is compatible,
and that you only use dry gasoline by filling up early in the morning
when the storage tanks are cool. Also ensure that the service station
storage tank has not been refilled recently. Retailers are supposed to
wait several hours before bringing a refilled tank online, to allow
suspended undissolved water to settle out, but they do not always wait
the full period.
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