Glow engines should be run slightly "rich." This means that the mix of fuel and air going into the engine has to have a bit more fuel in it than it can burn at once. This unburned fuel and oil help keep the engine cool. After a model has been run, it is coated with a film of oil and must be cleaned. Ordinary window cleaner and a paper towel do a nice job of removing the oil. | Glow engines should be run slightly "rich." This means that the mix of fuel and air going into the engine has to have a bit more fuel in it than it can burn at once. This unburned fuel and oil help keep the engine cool. After a model has been run, it is coated with a film of oil and must be cleaned. Ordinary window cleaner and a paper towel do a nice job of removing the oil. |