Dottie CO4 Dark Cutting Oil, 1-Gallon

Get dependable, professional-grade threading performance with Dottie CO4 Dark Cutting Oil. Designed specifically for cutting and threading steel and cast iron, this dark cutting oil delivers superior lubrication and a pressure-boosting chlorinated additive that helps penetrate alloyed or hard-grained pipe. The result: cleaner threads, reduced chatter and longer tool life on demanding ferrous alloys. Supplied in a convenient 1-gallon container, Dottie Dark Cutting Oil is ideal for shops and field teams installing conduit for security cameras, surveillance systems and monitoring equipment—where precise, durable threads are critical for equipment stability and grounding.

Formulated for ferrous metals, CO4 contains active sulphur and may stain non-ferrous materials such as copper, brass and stainless steel, so use appropriate protection when working with those substrates. The product’s black color makes coverage easy to see during application, helping technicians ensure consistent lubrication on each cut. Whether you’re prepping threaded fittings for industrial, networking, or physical security installations, Dottie CO4 offers the cutting support you need. Add a gallon to your toolkit and order now to improve thread quality across your security, surveillance and general mechanical projects.

• Produces cleaner, stronger threads on steel and cast iron for reliable pipe and conduit installs
• Chlorinated additive increases pressure tolerance for hard-grained or alloyed ferrous materials
• Reduces tool wear and improves cut finish, extending tap and die life on demanding jobs
• Economical 1-gallon size for jobsite and shop use—ideal for repeated security and surveillance conduit work
• Formulated for ferrous alloys; contains active sulphur that may stain non‑ferrous metals (avoid on copper/brass)
• Dark formulation helps identify coverage and ensures consistent application during threading