Comments on: Higher Octane for 1982 733i? http://www.bmwautosclub.com/higher-octane-for-1982-733i Mon, 06 Sep 2010 22:07:03 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: admin http://www.bmwautosclub.com/higher-octane-for-1982-733i/comment-page-1#comment-3185 admin Wed, 10 Mar 2010 08:22:54 +0000 http://www.bmwautosclub.com/higher-octane-for-1982-733i#comment-3185 <p>Gasoline octane level is relevant only to knock resistance.  It has nothing to <br /> do with fuel consumption or vehicle emissions.  You should use the minimum <br /> octane level that you engine can ignite without experiencing detonation <br /> (pinging).  Anything more is, as you say, a waste of money.  With your engine <br /> and mileage, I'd predict you'd need about 89 octane fuel in the U.S., maybe <br /> even 87. <br /> </p><p>Mike Miller <br /> </p> Gasoline octane level is relevant only to knock resistance.  It has nothing to
do with fuel consumption or vehicle emissions.  You should use the minimum
octane level that you engine can ignite without experiencing detonation
(pinging).  Anything more is, as you say, a waste of money.  With your engine
and mileage, I’d predict you’d need about 89 octane fuel in the U.S., maybe
even 87.

Mike Miller

]]>