For polishing and cleaning of aluminum parts in Russia, this method is used:
1. Thin sheet of food aluminum foil is crushed into a loose ball and washed like a sponge in a water.
2. The same ball of foil is using for washing and rubbing with Coca-Cola.
3. Rinse with water.
3. Put the part for 2-3 hours in warm solutions of citric acid (pour into plastic containers).