I saw Russians depicted as drinking brake fluid in Beast of War and couldn't believe it. A few searches proved it true!

Here's an excerpt from "Inside the Soviet Army in Afghanistan" by Alexander Alexiev (US Army document):

You cannot imagine what they drink. They will drink shaving lotions and cologne. That's good stuff. Then they will drink toothpaste. The best one is the Bulgarian Pomorin brand. They will simply squeeze four or five tubes in a jar, dilute it with water and drink it. They also drank truck antifreeze, glue, and brake fluid. The brake fluid they used to heat up and put some nails in it for some reason. I don't know why. They will also take shoe polish and smear it on a piece of bread and leave it in the sun until the alcohol separates from the shoe polish. Then you eat the bread and get drunk.