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Our Original Radiator Leakstopper® is a metallic sealer with a carrying agent that stays in suspension until carried to the leaking area. Metallic particles seal leaks when exposed to air. Ten minutes of engine operation completes the sealing cycle. A profitable year round seller. TRUSTED BY MILLIONS FOR DECADES!

Seal Test® Leak Detection system takes the guess work out of finding leaks in engines, transmissions, radiator coolant systems, and fuel systems. Fluorescent leak tracer dyes are custom blended to be 100% compatible with the system being tested. They are non-harmful to system fluids, gaskets, seals, and other component parts. No need to drain or remove after repairs are made.
The Original Radiator Leakstopper Counter Top Display 24 Tubes CD24 The "Original" Radiator Leakstopper (Counter-Top Display, 24 Tubes) - CD24
24 Tubes, Counter-Top Display - Leak Stopper is a metallic sealer with a carrying agent that stays in suspension until carried to the leaking area. Metallic particles seal leaks when exposed to air. Ten minutes of engine operation completes the sealing cycle. A profitable year-round seller. Trusted by Millions for Decades! $12.00
The Original Radiator Leakstopper Hanging Display 24 Tubes HU24 The "Original" Radiator Leakstopper (Hanging Display, 24 Tubes) - HU24
24 Tubes, Hanging Display - Leak Stopper is a metallic sealer with a carrying agent that stays in suspension until carried to the leaking area. Metallic particles seal leaks when exposed to air. Ten minutes of engine operation completes the sealing cycle. A profitable year-round seller. Trusted by Millions for Decades! $12.00
UV Spot Lamp w UV Safety Glasses 10210 UV Spot Lamp (w/UV Safety Glasses) - 10210
150 Watt/110V AC high-intensity UV spot lamp with 7' cord complete with UV safety glasses. It is included in our [[UV Fluorescent Crack Detection Kit]:product=10200]. Replacement Bulb - #[[10211]:product=10211]. $567.00
Black Light for Crack Detection 10217 Black Light for Crack Detection - 10217
UV 12 Volt/DC Black Light - 100 Watt Bulb. For use with fluorescent liquid or powder crack detection solutions. $209.00
Seal Test Oil Leak Tracer Dye 6 1 oz Bottles 10227 6 Seal Test Oil Leak Tracer Dye (6 - 1 oz. Bottles) - 10227-6
6 - 1 oz. Bottles - Seal Test automotive fluid leak detection system takes the guess work out of finding leaks in engines, transmissions, radiator coolant systems, and fuel systems. Fluorescent leak tracer dyes are custom blended to be 100% compatible with the system being tested. They are non-harmful to system fluids, gaskets, seals, and other component parts. No need to drain or remove after repairs are made.

Gas & Diesel Oil Crankcase Applications - 1 oz. to 5 qts. of lube oil
Ga... $26.95
Seal Test Oil Leak Tracer Dye 12 1 oz Bottles 10227 12 Seal Test Oil Leak Tracer Dye (12 - 1 oz. Bottles) - 10227-12
12 - 1 oz. Bottles - Seal Test automotive fluid leak detection system takes the guess work out of finding leaks in engines, transmissions, radiator coolant systems, and fuel systems. Fluorescent leak tracer dyes are custom blended to be 100% compatible with the system being tested. They are non-harmful to system fluids, gaskets, seals, and other component parts. No need to drain or remove after repairs are made.

Gas & Diesel Oil Crankcase Applications - 1 oz. to 5 qts. of lube oil
G... $53.85
Seal Test Oil Leak Tracer Dye 1 oz 10227 1 Seal Test Oil Leak Tracer Dye (1 oz.) - 10227-1
1 oz. Bottle - Seal Test automotive fluid leak detection system takes the guess work out of finding leaks in engines, transmissions, radiator coolant systems, and fuel systems. Fluorescent leak tracer dyes are custom blended to be 100% compatible with the system being tested. They are non-harmful to system fluids, gaskets, seals, and other component parts. No need to drain or remove after repairs are made.

Gas & Diesel Oil Crankcase Applications - 1 oz. to 5 qts. of lube oil
Gas & D... $5.95
Seal Test Coolant Leak Tracer Dye 1 oz 10235 1 Seal Test Coolant Leak Tracer Dye (1 oz.) - 10235-1
1 oz. Bottle - Seal Test automotive fluid leak detection system takes the guess work out of finding leaks in engines, transmissions, radiator coolant systems, and fuel systems. Fluorescent leak tracer dyes are custom blended to be 100% compatible with the system being tested. They are non-harmful to system fluids, gaskets, seals, and other component parts. No need to drain or remove after repairs are made.

Radiator-Coolant System Applicatons - 1 oz. to 2 gallons of anti-freeze

U... $6.20