What is commonly used as a lubricant for mechanical parts in spray guns?

Using non-silicone grease as a lubricant for mechanical parts in spray guns is advantageous because it provides the necessary lubrication without compromising the integrity of the paint being sprayed. Silicone can interfere with paint adhesion, causing issues with finishes, while other options, like olive oil and water-based lubricants, may not offer the stability or performance required for heavy-duty mechanical applications. Non-silicone greases are formulated to withstand various temperatures and can provide lasting lubrication, ensuring that moving parts work smoothly without degrading or affecting the spray quality. This makes it the preferred choice among professionals in the painting and refinishing industry.