Why did Italian automatic gun mounts need special grease?

Why did Italian automatic gun mountings require specialised grease?

Their breeches and powered ammunition-handling mechanisms had to work from cold starts through intense heat, but imported Swedish lubricants became vulnerable to competing German demand.

Italian technical material specified particular greases for the complex mechanisms inside automatic gun mountings. One was probably used around the breech, where it had to function from a cold start through the heat of sustained firing. Hoists and other ammunition-handling machinery also needed lubrication that would keep moving without becoming an additional fire hazard. At least one specialist product came from Sweden, but German control of Baltic access did not guarantee Italian supply because Germany needed it too. A minor imported consumable could therefore limit an otherwise advanced weapon system.