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The BMW Range
3 Series
E90, E91, E92, E93
V-Power - Hmmmm.....
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<blockquote data-quote="Schwepps" data-source="post: 396606" data-attributes="member: 3592"><p>That's not knocking, et. Knocking is a metallic pinging sound caused by spontaneous combustion under high compression and high temperature. Knocking happens under heavy acceleration, not low RPM or decceleration.</p><p></p><p>Anti-knock is added to raise the octane level of a gasoline to make it LESS susceptible to self-combustion. The first form of anti-knock agent was lead. Now they use safer agents. <a href="http://en.wikipedia.org/wiki/Antiknock_agent" target="_blank">http://en.wikipedia.org/wiki/Antiknock_agent</a></p></blockquote><p></p>
[QUOTE="Schwepps, post: 396606, member: 3592"] That's not knocking, et. Knocking is a metallic pinging sound caused by spontaneous combustion under high compression and high temperature. Knocking happens under heavy acceleration, not low RPM or decceleration. Anti-knock is added to raise the octane level of a gasoline to make it LESS susceptible to self-combustion. The first form of anti-knock agent was lead. Now they use safer agents. [url]http://en.wikipedia.org/wiki/Antiknock_agent[/url] [/QUOTE]
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V-Power - Hmmmm.....
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