What should my 2 stroke oil be 25 to 1 , 50 to1.?
B bonitoman Petty Officer 1st Class Joined Jul 9, 2002 Messages 292 Feb 21, 2009 #1 What should my 2 stroke oil be 25 to 1 , 50 to1.?
jbjennings Captain Joined Jul 18, 2007 Messages 3,903 Feb 21, 2009 #2 Re: 1958 johson 7.5 hp No less oil than 24:1 for sure. My '55 7.5hp actually calls for 16:1! JBJ
F F_R Supreme Mariner Joined Jul 7, 2006 Messages 28,226 Feb 21, 2009 #3 Re: 1958 johson 7.5 hp Yep, original was 1 quart of oil to a 4 gallon tank. There are later charts changing that to 24:1, but that's as far as I would go. There are even charts making it 50:1, but that is treading in dangerous territory.
Re: 1958 johson 7.5 hp Yep, original was 1 quart of oil to a 4 gallon tank. There are later charts changing that to 24:1, but that's as far as I would go. There are even charts making it 50:1, but that is treading in dangerous territory.
wbeaton Commander Joined Jul 30, 2006 Messages 2,332 Feb 22, 2009 #4 Re: 1958 johson 7.5 hp Yup 16:1 or 24:1. Its your choice. This has sparked lots of arguments. I use 24:1 with synthetic oil in all my 1950's outboards.
Re: 1958 johson 7.5 hp Yup 16:1 or 24:1. Its your choice. This has sparked lots of arguments. I use 24:1 with synthetic oil in all my 1950's outboards.
B bonitoman Petty Officer 1st Class Joined Jul 9, 2002 Messages 292 Feb 22, 2009 #5 Re: 1958 johson 7.5 hp Thanks, I will run it that way. I thought 25 : 1 is heavy. 16:1 is thick.
