Fuel for older Evinrude/ Johnson

[68glasspar]

Will older evinrude and johnson outboards handle a 10% alcohol fuel/ oil mix?
By older i mean pre 1980. Trying to find fuel without alcohol in it is getting very difficult.

 

[Crosbyman]

yes run 24/1 twc3 oil fuel mix nothing wrong with 87 octane 10% fuel use fuel saver additive . I always store fully fuelled and carbs full during winter storage. never have problems.. you can run 16/1 in 1950s OBs and older

50/1 was pretty well the norm mid 1960s and up

 

[cyclops222]

Just remember The unbreakable rule about any vehicle switching to... E 10 ..gasoline.
There were horror stories of the Ethanol in the gasoline dissolving all the varnish and other sludges in gas tanks, fuel lines and carburetor parts. Engines slowed down and stopped. I have never run E 10 in my 1986 and 1998 Evinrudes. I fill up at a Marina that only sells NONE E types of gasoline. I use several 6 gallon gas tanks in the boat. Can always find a gas station with regular gas on a trip.

 

[Chris1956]

Your first tank of e10 will tend to loosen some old crap in the fuel tanks. Be prepared to change the fuel filter after the first tank. Watch the rubber fuel lines for failure. Most fuel lines have already been changed to alcohol-resistant by now, but keep an eye on 'em.

J/E motors after 1964 run a 50::1 fuel mix.

 

[68glasspar]

My oldest boat is a 1968 glaspar with a 69 evinrude 85hp, I had the fuel tank out last year and had a radiator shop clean it out. 2nd boat is a 16ft lund with a 1978 johnson 25hp., that i believe i may have already run some 10% fuel with amsoil 50:1 and some star-tron additive

 

[JimS123]

My old boats have 1952 and 1964 outboards on them. Our local govmnt gave us E10 before they actually told us. I have never had gas problems, ever.

The only caveat is that all my motors are well maintained and garage kept.