Fuel Mixture for 1979 Johnson 35hp

[Lost]

I'm wondering what the Johnson recommended fuel mixture would be for my '79 Johnson 35hp outboard. Want to make sure I go with the manufacturers recommendations. Also, what 2-stroke outboard oil brand should I use? I've been doing some reading on this and a lot of people seem to be convinced that the Wally Mart brand is just the Quicksilver brand, relabeled.

[harvey lee]

I believe if you pull the cover on the motor you will see the rate.If it is a tiller they use to put a white sticker on the inside of the tiller handle with the rate also.50-1 rings a bell but I would not bet on it.

[eyepatrol]

50:1 I believe is about the ratio for 2-strokes, but like HL said, you should check. My dad's 1994 Mariners take a 50:1 ratio. It's 8oz oil for 3gals gas or 16oz oil for 6gals gas.

[jwhjr]

I've got an '81 Evinrude 35hp and it takes a 50:1 mix. I can't imagine it would have changed in 2 years. It does say the ratio under the cover as well so I would also check there as others have stated. Good luck

[PierBridge]

50-1 use Johnson oil.

[Bob/Mn]

I have a 1978 35hp OB and use a 50:1 mix. I have had good luck with TC-3 spec. oil and 91 otane gas.

[Lost]

Thanks guys! I looked all over the outboard for the ratio and couldn't find it anywhere. After a lot of searching and talking to several people... it seems as if you are all right on the money... 50:1.

[New Yankee]

Found this on another site - pretty comprehesive....

MERCURYs - ANY non-high performance Merc made after 1960 can handle a 50:1 mixture of fuel and oil. Racing motors will need more oil. I run 20:1 in my smaller Merc racers. Newer V6 high performance engines might need more and some require av-gas (100 octane).

POST-1964 JOHNSON/EVINRUDE/GALE - The official stance on 1964 and newer OMC engines is to run them 50:1 and it's a good rule of thumb to follow on the bigger motors. OMC also renegged on the late 1980s 100:1 recommendation on the smaller (4-35hp) motors, bumping them back to 50:1. I've found that the smaller (3, 4, 5, 6hp) motors from post 1964 up into the mid-1970s may appreciate a bit of extra oil as they still have some bronze sleeve bearings. I run 40:1 in my '72 4hp, as I have a pile of holed blocks, burned cranks and twisted rods that were run at 50:1.

1960-1964 JOHNSON/EVINRUDE/GALE - 18hp and up can run at 40:1, as they are mostly jeweled motors at this point. Anything smaller run it at 24:1. Pre 1960 - any size, run it 24:1. If it's used for racing or high performance, double up the oil...

CHRYSLER/FORCE - All Chrysler/Force motors can run at 50:1, except for anything used in a high performance application - double it up.

ALL other brands - pre 1960 run 24:1. Pre-WWII run 20:1. Most brands post 1970 run 50:1.

Also, 2-stroke outboards are not lead dependent, so don't waste your money on lead additives, regardless of the age of the motor.