fuel to oil mix ratio???

J

justafloatin

Cadet
Joined
May 9, 2011
Messages
11
Howdy Folks, I have a Johnson model rde 19 35hp. Can you tell me what the correct oil mix ratio is? I did a search and found everything from 50:1 to 24:1. I want to make sure I get it right. I plan on purchasing a shop manual for the motor, just can't swing quite yet. Thanks
 
C

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,798
Re: fuel to oil mix ratio???

You need to determine the year of that motor. Johnnyrude recommends 24::1 mix for motors older than 1964.

Maxrules.com may have a model guide for you to look at. If not, someone here knows how to decode the model number into the year.
 
DargelJohn

DargelJohn

Petty Officer 1st Class
Joined
Feb 14, 2010
Messages
337
Re: fuel to oil mix ratio???

Not familiar with the Model number. If this motor predates needle bearings, then you would use 24:1 mix.
 
J

justafloatin

Cadet
Joined
May 9, 2011
Messages
11
Re: fuel to oil mix ratio???

Thanks. I should have put on the thread that it is a 1957. So the mix should be 24:1?
 
JB

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: fuel to oil mix ratio???

Your RDE-19 is actually a 1958 model, justafloatin. A lot of them were made in 1957, just like 1958 auto models.

Roger on the 24:1.
 
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