Why does the piston keep on burning up?

Hint 1 of 5:

It is dry.

Hint 2 of 5:

Use some kind of lubricant on the piston.

Hint 3 of 5:

What lubricant?

Hint 4 of 5:

You enjoy looking in garbage cans, don't you?

Hint 5 of 5:

Look in the kitchen.