LEAKFINDER LF1008 Refrigerant Leak Detection Dye 8oz Twin-Neck — R-134a/R-1234yf, UV Fluorescent Green

The LEAKFINDER LF1008 is a professional fluorescent refrigerant leak detection dye in an 8oz twin-neck bottle, engineered to reveal micro and intermittent leaks in R-134a and R-1234yf automotive air conditioning systems under UV light.

Designed for technicians and serious DIYers, this concentrated A/C dye circulates with system refrigerant to highlight leaks that are otherwise invisible. Its twin-neck bottle simplifies dosing for syringe-style injectors and reduces mess on the bench; when illuminated with a UV lamp the dye emits a bright green glow to show precise leak locations. Compatible with common PAG oils and modern refrigerants, LF1008 helps speed diagnosis and avoid unnecessary component replacement.

How does LF1008 detect tiny or hidden A/C leaks?

The dye mixes with refrigerant and moves through the system to any point where refrigerant escapes. Under ultraviolet illumination, the dye fluoresces, exposing pinholes, weld cracks, hose permeation, and intermittent weeps that might not be seen otherwise.

• Circulates with refrigerant to follow leak pathways
• Bright green fluorescence under UV reveals micro-leaks
• Works on metal fittings, hoses, evaporators, condensers, and O-rings
• Detects transient leaks that appear only under certain pressures or temperatures

Is this dye compatible with modern refrigerants and oils?

Yes—the LF1008 formulation is compatible with both R-134a and R-1234yf systems as well as commonly used PAG oils when used according to instructions. It’s formulated to avoid harming compressors or interfering with recovery equipment in proper concentrations.

• Safe for R-134a and R-1234yf air conditioning systems
• Formulated to mix with PAG lubricants found in many vehicles
• Designed for professional service environments and recovery equipment
• Follow dosing guidelines to prevent excess residue

How do you apply the twin-neck bottle for clean, accurate dosing?

The twin-neck design gives a clear fill and dosing option for syringe-style injectors, reducing guesswork and spills during service. Use a compatible injector or transfer device to draw the correct amount and inject it into the low-pressure port per vehicle service guidelines.

• Twin-neck configuration helps measure and draw precise volumes
• Minimizes drips and overfilling compared with single-neck containers
• Injector and UV flashlight are sold separately for flexible tool choices
• Labelled dosing recommendations help ensure repeatable results

What tools and steps are needed to find a leak after adding LF1008?

After the dye has been circulated through the system, a UV or blacklight flashlight is used to inspect components. Focus on joints, hose ends, condenser faces, and evaporator cores; use mirror tools and clean surfaces for best visibility.

• Add dye per service instructions and run the A/C to circulate the fluid
• Scan fittings, hoses, and cores with a handheld UV flashlight
• Use cleaning solvent on oily areas to reveal fluorescence clearly
• Document leak location for repair and subsequent recheck after service

Who this is for: The LEAKFINDER LF1008 suits automotive service technicians, fleet maintenance shops, and experienced DIYers who need a reliable way to locate elusive refrigerant leaks fast. It’s ideal when you want to reduce time spent on diagnostics, avoid replacing parts unnecessarily, and get precise visual confirmation before performing repairs. Note that the package contains the dye bottle only—injector hoses and UV inspection lights are available separately for professionals who want complete leak-detection kits.