AC-90 Multi-Purpose Lubricant is a professional-grade maintenance spray trusted by engineers, mechanics, and industrial technicians worldwide. Designed as a true 5-in-1 maintenance solution, AC-90 displaces moisture, lubricates moving parts, penetrates rusted fasteners, protects against corrosion, and cleans dirt, grease, and grime. Its silicone-free formula makes it suitable for automotive, industrial,