I have a 1972 40hp mercury serial #3345918 what is the oil mixture ratio
J John5421 Cadet Joined Jul 13, 2003 Messages 23 Jun 5, 2004 #1 I have a 1972 40hp mercury serial #3345918 what is the oil mixture ratio
JB Honorary Moderator Emeritus Joined Mar 25, 2001 Messages 45,907 Jun 5, 2004 #2 Re: oil mixture ratio 50:1, John.
