Oooppps, missed this one, here is a complete chart!! http://www.rctek.com/pdf/fuel_to_oil_ratio_chart.pdf Regards Peter Lowe R&V Engine Registrar Australia Ph: 61-266453455 http://www.oldengine.org/members/plowe/rv-engines/rvpage.htm http://www.oldengine.org/members/plowe/rv-engines/rv-register.htm