There is a problem when using any alcohol based additives in a 2 Stroke engine. The problem is known as bore wash. Alcohol is a hygroscopic compound. Which means that it attracts water. It will pull a fair amount of water from just the humidity in the air. This water and alcohol settles at the botom of the tank . It is especially a problem if you are running your moped on the reserve position. When this mixture of alcohol and water is run through your engine it acts like a solvent and strips away the thin layer of oil protecting the piston cylinder and bottom end. Often times people will bring their moped into a shop for a siezure problem and they are told that they must have run it without oil. The customer swears they have always maintained the proper oil ratio. What we do next is check for alcohol content. There are several specialized tools used to give you the alcohol content for gasoline however here is a quick and free way to check for its prescence yourself.
Take a glass or beaker (prefeerably one with graduations on it) and fill it with about 1/3 cup of ordinary tap water. Then take about 2/3 of a cup the gasoline you wish to test. take notice of the exact amount in the glass either by reading the graduation or by carefully marking the level on the glass. Shake the glass vigorously for about 3 minutes taking care not to spill any of it. let it settle and then look at how much is in the glass. Over the next 10 minutes keep checking the level. If any alcohol is present you will see an increas in the amount in the glass.
The Moped WareHouse