Jolene said..AUS126 said..Bundeenabuoy said..AUS126 said..
I use to not worry about putting too much oil in the fuel, until I saw the unburnt oil come out the exhaust and leave an oil slick. I now realise how polluting 2 strokes are, and would happily put up with a heavier and more complicated outboard. I can see why we are moving on.
Are you saying that oill was running out of the exhaust?
Yes, unburnt oil goes out exhaust. I now tend to mix closer to 70 :1 instead of 50:1. I've been told you can get away with 100:1. Wouldn't want to have a warranty claim though.
You might be getting away without seizing the engine mixing oil ratio leaner but in reality your just wearing the motor out faster.
The fuel oil ratio is also affected by the the carby air mix, for instance to get more revs out of a two stroke you can lean it off ( we all know how they go like clappers as the fuel runs out, that's owing to the leaning of of fuel air mix ) but of course leaning the air fuel mix to get more revs means less lubricating oil for the engine, that is unless you increase the oil to fuel ratio to compensate.
Proably has no bearing on the average outboard, but I've used this method to squeeze more go out of every 2/ I've ever owned since I was put onto that theory in the pits at Liverpool speed way as a lad, and all of my bikes, mowers, brushcutters, chainsaws easily lasted as long if not longer that the the equivalent unit in other hands.
Golden rule- dedicated container, oil 1st ie: no oil in the container, no fuel in the container ever !