LEAKFINDER Oil-Based UV Leak Detection Dye Kit — 6×1oz Bottles, Yellow-Green Fluorescence

LEAKFINDER LF2001 is a concentrated, oil-compatible fluorescent dye kit (six 1oz bottles) that reveals oil, fuel, ATF and power-steering leaks under UV light for fast, accurate diagnostics.

If you service vehicles or troubleshoot fluids, the LF2001 provides a professional-grade oil-based tracer that mixes with lubricants and hydraulic fluids, circulates through the system, and fluoresces yellow-green when illuminated by a UV lamp. Each 1oz bottle treats one vehicle, and the oil-compatible formula is designed to locate micro-leaks, intermittent weeps, and hidden seepage without altering system chemistry. The twin-neck bottle design is optimized for syringe-style injectors to reduce mess and ensure consistent dosing during routine maintenance or diagnostic workflows.

How does this dye find leaks I can’t see with the naked eye?

The LF2001 dye is oil-soluble and engineered to travel with base fluids, so even the smallest breaches carry the tracer to the leak site. Under a UV/blacklight, the dye emits a bright yellow-green glow that contrasts sharply against dark engine compartments, making hairline cracks, gasket failures, and pinhole leaks visible instantly.

• Oil-soluble fluorescent chemistry that blends into oil, ATF, fuel, and power steering fluids
• High-visibility fluorescence under standard leak detection flashlights
• Effective at revealing micro leaks, intermittent seepage, and hidden drips

Will this dye work with the systems and flashlights I already use?

Yes — LF2001 is formulated for compatibility with common automotive systems and standard UV leak-detection tools. The dye fluoresces in the yellow-green spectrum, which is readily detected by typical 365–395 nm UV LEDs and blacklights used by mechanics and technicians.

• Compatible with oil, gasoline, ATF, and power steering systems
• Works with most commercially available UV flashlights and inspection lamps
• No special solvents or proprietary hardware required to visualize leaks

How do I apply the dye without making a mess or overfilling?

The LF2001 bottle is designed to pair with syringe-style injectors and features a twin-neck for controlled dosing, reducing spills and ensuring each vehicle receives the recommended amount. Because each 1oz bottle services a single vehicle, technicians can avoid cross-contamination and maintain consistent application volumes across jobs.

• Twin-neck bottle fits common syringe injectors for measured application
• Single-bottle-per-vehicle dosing minimizes waste and contamination
• Clear instructions enable quick addition during service or fluid top-ups

What exactly is included, and what else will I need to complete a leak check?

The box contains six 1oz LF2001 dye bottles only. For a complete inspection you’ll also need a UV/blacklight flashlight and, optionally, a syringe-style injector or hose to add the dye without spilling. The dye itself is made in the USA to meet professional service demands.

• Included: six 1oz oil-based UV dye bottles — each treats one vehicle
• Not included: UV flashlight and injector hose (sold separately)
• Proudly manufactured in the USA for consistent, professional performance

Who is this for? LEAKFINDER LF2001 is aimed at professional mechanics, service shop technicians, fleet maintenance teams, and experienced DIYers who need a reliable, oil-compatible tracer to speed diagnostics. It’s ideal when you need a quick, visual confirmation of leaks in oil, fuel, ATF, or power steering systems without the downtime of guesswork or disassembly. If you require a clean, easy-to-dose fluorescent dye that integrates with existing UV inspection tools, LF2001 is built for that workflow.