johnson

sameoldline

Recruit
Thread starter
Joined
Dec 8, 2007
Messages
5
can any one tell me what causes my 18 hp to oil up the water everytime i use
 

crb478

Lieutenant Junior Grade
Joined
Dec 6, 2006
Messages
1,036
Re: johnson

Most likely because it is a 2 cycle motor. What year is it and what mixture ratio does it require. You can try synthetic oil and it may oil the water less, but 2 cycle engines do not burn all of the oil since some is needed for lubrication.
 

sameoldline

Recruit
Thread starter
Joined
Dec 8, 2007
Messages
5
Re: johnson

its a 1961 and i was told to use a 50 : 1 mix . is that right .. thanks
 

F_R

Honorary Supreme Mariner
Joined
Jul 7, 2006
Messages
28,226
Re: johnson

That is not right, but the truth is that it probably is OK. It's supposed to be 24:1, but there was no real change to the powerhead when they went to 50:1 in 1964. Make sure you use only oil Certified TC-W3. Penzoil 100% Synthetic Outboard oil meets that qualification and is bio-degradeable so you can feel better about dumping it in the creek. And your motor was designed to do just that.
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: johnson

use 24-1 fuel -oil mix. did not change to 50-1 until 1964. the oil slick is normal. be sure you are firing on both cylinders, and carb adjustments are correct.
 
Top