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Location: Kita-Ku, Sapporo, Japan
Registered: January 2003
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Re: ULP or LRP in 4kc??
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Thu, 11 November 2004 15:01

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meant to?
something with maybe 95-100 octane..
it is fine to run on unleaded as the valve seats are hardened.
i've been running my K motors hard on premium for a long time.
K motors from the 60;s are fine to run on unleaded... but if octane is too low it will ping
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