proper mixture

P

plmbr

Seaman Apprentice
Joined
Oct 4, 2003
Messages
37
I have a 1953 Johnson Sea Horse 5 HP and have been using the same gas and mixture [50:to1] as I use in my 1990 9.9 . My question is. Is this enough oil in the mixture for the 5 as the old mixture was 1qt. to five imp. gallons back in the day. Thanks ...Plmbr
 
R

rjezuit

Chief Petty Officer
Joined
Sep 24, 2007
Messages
418
Re: proper mixture

I believe 50:1 is too lean. 16:1 or 24:1 is correct. Rick
 
rolmops

rolmops

Vice Admiral
Joined
Feb 24, 2002
Messages
5,316
Re: proper mixture

Your little engine does not have needle bearings and because of that it needs a lot of lubrication to keep the bushings well oiled.Stick to 1:16 or 1:24 and you will enjoy your engine for another 50 years.
 
JB

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: proper mixture

24:1 is a safe mix using TC-W3 outboard oil. The 16:1 mix was using SAE 30W motor oil.
 
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