AutoLine Pro UV Smoke Fluid for Leak Detection — 2 x 8oz Brightest UV Glow, 395nm High-Visibility, Low-Residue

AutoLine Pro Smoke Fluid Brightest UV Glow is a laboratory-refined, ultra-pure smoke fluid that produces long-lasting, intensely glowing UV smoke for fast and reliable automotive leak detection.

Designed for professional technicians and dedicated DIYers, this two-bottle pack (2 x 8 oz) provides a high-output, UV-reactive solution engineered to perform through smoke machines without leaving residue or harming equipment. The formula was developed and tested in a California lab to deliver steady, thick smoke that fluoresces most strongly at 395 nm, making it easy to spot with the proper UV flashlight. It works across a wide range of automotive systems while remaining compatible with nearly all smoke machines on the market.

How does this fluid make leak tracing faster and clearer?

The fluid produces concentrated, persistent vapor that carries UV dye into tight crevices and leak points, making visual detection quicker. Because the dye remains visible after vaporization, technicians can rapidly locate hairline cracks, gasket failures, and vacuum leaks without repeated passes.

• Bright fluorescence optimized at 395 nm for clear visibility
• Long-lasting smoke that reaches hidden or recessed leaks
• Stays visible after vaporization for easier pinpointing

Will this product damage my smoke machine or sensors?

AutoLine Pro’s formulation prioritizes purity to reduce deposits and protect internal components. The blend is lab-tested to minimize residue compared with lower-quality fluids, but standard maintenance and following your machine maker's guidance remain recommended.

• Ultra-pure composition to limit coating of internal parts
• Tested for safe use in most commercial smoke testers
• Avoid using with Ventus machines—use Ventus-specific fluid for those devices

How long will each bottle last during continuous testing?

Each 8 oz bottle is formulated to provide extended run time, supporting long diagnostic sessions without frequent refills. AutoLine Pro rates each bottle for up to 700 minutes of steady, thick output under typical operating conditions, which reduces interruptions and improves workflow.

• Up to 700 minutes of continuous smoke output per bottle
• Thick, steady vapor ideal for extended diagnostics
• Two-bottle pack doubles on-site capacity for longer jobs

Which systems and scenarios are best suited for this smoke fluid?

The fluid is versatile and intended for a broad set of automotive leak-tracing applications, from EVAP system checks to intake and exhaust inspections. It also helps find leaks in turbo systems, cooling passages, body seams, and other hard-to-reach areas that demand reliable visual markers.

• EVAP, vacuum, intake, exhaust, turbo and supercharger checks
• Engine cooling systems, EGR passages, and engine block inspections
• Bodywork seams, HVAC ducts, and other vehicle interior/exterior leaks

Who is this for: AutoLine Pro Smoke Fluid Brightest UV Glow is aimed at automotive technicians, service shops, and serious DIYers who require a dependable, high-visibility smoke tracer for precise leak location. If you run frequent diagnostic sessions and need long run-times with a UV dye that remains visible after vaporization, this ultra-pure two-pack delivers laboratory-developed performance—just be sure to use Ventus-specific fluid for AutoLine Pro’s Ventus model.