Here's a link to the engine
http://www.horizonhobby.com/Shop/ByC...ProdID=SAIE072
On the left side of the page is a link to the manual:
http://www.horizonhobby.com/ProdInfo...ingles2004.pdf
It's a 1 mb file. Fuel reccomendations are on page 3 (page 5 in acrobat reader)