If I was looking for something to come out of the engine, it would be straight gasoline I put in. If the mix is a little thick you might miss something that came out.
32/1 fuel mix will loosen any debris in the crankcase, straight gas will wash the lubrication from the bearings on the crankshaft. Any mix left in the crankcase will contain oil to lubricate when it starts. Use a good quality 2-cycle oil designed for air cooled engines.
32/1 fuel mix will loosen any debris in the crankcase, straight gas will wash the lubrication from the bearings on the crankshaft. Any mix left in the crankcase will contain oil to lubricate when it starts. Use a good quality 2-cycle oil designed for air cooled engines.