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Ken,

Q--On the older IO-470-U,V Do they require 80 or 100 octane fuels.

A--The IO-470-U and V require 100LL.  The 225 bhp IO-470-J, K can use 80/87.
  The 250 bhp IO-470-G,P,R,T can use 91/96.  All other IO-470's use 100LL.

ERic--

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LML website:   http://www.olsusa.com/Users/Mkaye/maillist.html
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Please send your photos and drawings to marvkaye@olsusa.com.
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