What is the recommended fuel / oil ratio for a 9.9 hp, 1978 Evinrude?
H Hydroplane Recruit Joined May 14, 2001 Messages 2 May 15, 2001 #1 What is the recommended fuel / oil ratio for a 9.9 hp, 1978 Evinrude?
D Dhadley Supreme Mariner Joined Feb 4, 2001 Messages 16,978 May 16, 2001 #2 Re: 1978 Evinrude Oil Mixture? FRESH 87 octane at 50:1 using good oil.<br /><br />Good luck!
