Mouse Milk (Worldwide Filter)

Mouse Milk by Worldwide Filter

Mouse Milk is a premium line of penetrating oils developed by Worldwide Filter, Inc., a minority-owned, service-disabled veteran-owned business based in San Leandro, CA. Since 1968, Mouse Milk has been trusted by mechanics, pilots, and technicians for its unmatched ability to dissolve rust, reduce friction, and restore seized components.

Why Professionals Choose Mouse Milk

  • Aerospace-Tested Performance: Meets demanding specs including Boeing D6-17484/87, MIL-Q-9858A, and ASTM F-1111.
  • "Muscle in a Hustle": Known for exceptional creeping action that penetrates deep into threads and assemblies.
  • Multi-Tool Use: Functions as a penetrant, rust remover, cutting fluid, and oxidation inhibitor.
  • Multiple Formulas: Choose from the original yellow, VOC-compliant purple, or green variant depending on application needs and regulations.

Product Range

Explore our full suite of Mouse Milk products—each designed for performance, reliability, and convenience:

  • Standard Yellow Formula (8 oz & 32 oz): Fast-acting petroleum-based penetrant ideal for general use.
  • VOC-Compliant Purple Formula (8 oz): California-legal vegetable oil base for eco-regulated environments.
  • Green Formula: Specialized formulation for control cables and legacy applications.
  • 16 oz Refillable Spray Bottle: Custom-designed sprayer compatible with all Mouse Milk formulas for precision delivery.

Sustainability & Compliance Focus

Worldwide Filter prioritizes both performance and responsibility. Their VOC-compliant purple formula meets strict environmental regulations, while the refillable spray bottle helps reduce single-use plastic waste—making Mouse Milk a practical choice for sustainable maintenance practices.

About Worldwide Filter, Inc.

Founded in 2004, Worldwide Filter, Inc. is a service-disabled veteran-owned and minority-run company that provides lubrication and filtration solutions to aerospace, industrial, and fleet industries. Mouse Milk remains one of their flagship offerings, combining technical innovation with a legacy of trust in aviation and mechanical fields.