Mikesc,
What do you use to clean machines in France? I am curious! I would like to know.
I have rebuilt sewing machines for over 30 years. I have used all kinds of chemicals from brake cleaner to Carburetor cleaner to paint thinner to kerosene to parts cleaner. You name it. Most petroleum based cleaners may etch paint and they are not good for you either. What is available in the US may not be available in France. That does not make it bad however. Most of the time you are dealing with old grease, oil, dirt, rust and who knows what. They key is getting something that works and is not harmful to you or the machine.