10 Best Oil Leak Detection Dye of 2025

Tested and Reviewed: Top 10 Oil Leak Detection Dye deals with expert ratings from 8.1 to a perfect 10

April 2026 Edition

Editor's Choice

9.7

A/C Pro

A/C Pro Certified Auto Pro Oil and Fuel System UV Dye Leak Detection for Cars & Trucks & More, 1 Oz, 374CS, Universal

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Editor's bottom line:

“This oil leak detection dye is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

One application of oil and fuel system UV leak detection dye
For use in engine oil, transmissions, power steering systems and gas/diesel fuel systems
Compatible with all weights of petroleum-based lubricant
Helps locate leaks
Professional grade

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Picked by 397 people today

9.5

TSI Supercool

TSI Supercool TD8 Total Dye, 8 oz (Self Measure Bottle)

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Main Highlights

package height : 15.24 cm
package length : 4.064 cm
package width : 6.858 cm
Product type : AUTO OIL
Country of manufacture: United States

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9.5

LEAKFINDER

LEAKFINDER LF2008 Automotive Oil-Based Fluid Leak Detection Dye, Services Auto Oil, Fuel, ATF, Power Steering, 8oz Ultraviolet Fluorescent Dye Twin-Neck Bottle, Made in USA

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Main Highlights

AUTOMOTIVE LEAK DETECTION SOLUTIONS - The LEAKFINDER brand from TRACER PRODUCTS offers the brightest, most cost-effective, and efficient solution for finding AC and fluid-based vehicle leaks.
PRODUCT DETAILS - Finds leaks in Oil, Fuel, ATF, and Power Steering Systems, Fluoresces Yellow/Green, Works with All Leak Detection Flashlights, Each bottle services 8 vehicle.
LEAK DETECTION MADE SIMPLE - Let the UV fluorescent dye circulate throughout the vehicle system. The dye escapes with the host fluid and collects at all leak sites. Use a LEAKFINDER leak detection lamp to scan and see all leaks glow brightly.
PINPOINT MICRO LEAKS WITH HIGH ACCURACY - LEAKFINDER UV leak detection dyes find the smallest and most problematic leaks that would otherwise be impossible to detect. Quickly pinpoint hard-to-find leaks - including intermittent and multiple leaks.
MADE IN THE USA - Proudly manufactured in the U.S.A., Tracer Products has over 65 years of experience delivering award-winning professional service and the industrys most powerful leak detection dyes, inspection lamps, and diagnostic tools.

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9.2

TRACER

Tracer Products TP-3090-0601 Gas Engine Oil dye, 1 Pack

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Main Highlights

Gasoline engine oil dye, 1 oz. bottle, 6 pack
Produced with the highest grade materials
Satisfaction ensured

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9.0

ACDelco

ACDelco 1148963 GM Original Equipment 10-5045 Multi-Purpose Fluorescent Leak Detection Dye - 1 oz

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Main Highlights

Multi-purpose dye can be used with gasoline and diesel engine oil, power steering fluid, and automatic transmission fluid
Specially formulated to safely remain in the system after the leak detection is complete
Works in conjunction with the ACDelco Ultra Violet (UV) Leak Detection Lamp Kit

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8.8

REALHUNLEE

REALHUNLEE Air Conditioner UV Dye Leak Detector, Pro Auto Oil AC UV Dye Leak Test Detection Tool Kit 68 LED A/C UV Flashlight Detector with Protective Glasses

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Main Highlights

Professional Grade & High Accuracy-- Pro High-intensity true UV leak detection flashlight, INCLUDE GLASSES! 12.3 W 385-395nm leak detection flashlight with 68 top quality LED helps you to find leak stains EVEN in indoor or streetlight.REALHUNLEE AC Leak Detector Flashlight is 40% Brighter than other light, best choice for Automotive Air Conditioner Leak Detection!
Save Your Money & Time-- Works with all types of U*V Refrigerant leak detection dye! Pinpoint the origin of leaks of ANY kind with this Auto Air Conditioner Oil Leak Detector Tool Flashlight, even in bright environments. Help you inspect the leak stains in seconds! Impact resistant military grade aluminum weighing.
Wide Range of Applications & Durable-- This u*v Contamination and Leaks detector flashlight is a great helper for your life -- Authenticate currency,engine,driver license, Auto&Air Conditioning Freon Refrigerant Leak, official identification cards,passports. Essential tool for medical forensics, Auto car leaks, HVAC repair and so on.Help you to save thousands of dollars,efforts and time!
Long Running Time & Durable-- Car Leak Detector Flashlight is Premium Aluminum Construction with anti abrasive surface treatment, non-slip textured grip, lanyard useful either to wrap wrist or belt loop. The lighting time up to 20 hrs!!This Auto Leak Detector Flashlight also covers larger area without weaken the light. 3xAA batteries NOT includeddue to the shipping policy
What You Got-- This Car AC Leak Detection Flashlight Kit comes with great after service! We will give you a satisfactory solution within 24 hours! Please don't hesitate to contact us if you have any questions or concerns about our product !

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8.6

COSOOS

COSOOS Air Conditioner Leak Detector Tool, AC Leak Detector Kit, UV Light for AC UV Dye Leak Detection, Oil Dye Leak Detector with Protective Glasses

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Main Highlights

Professional AC Leak Detection: COSOOS leak detector design for detecting automotive air conditioner leak, flashlight with Professional grade 21 high intensity LED, it can accurately pinpoint leaks in seconds, enabling precise repairs and prevent potential accidents.
Ultra Compact Design: Crafted from premium military grade aluminum, each car leak detection tool measure in 3.7*1.2*1.2inch, the compact size is perfect for carrying with the vehicle, package also equipped with a portable bag to storage this car leak detection tool.
UV Protective Glasses: Made of high quality Polycarbonate and yellow filer optical lenses, this protective glasses can blocks most of UV rays, promote the vision at dark situations, give you more clear visibility and protect your eyes. Its an essential tool to keep in car.
Wide Range of Applications: This Leak detector flashlight has very wide range of use, not only works with all types of UV leak detection dye, but also work well on pet urine detection, scorpions finding, cure UV resin, bathroom/hotel cleanliness inspection, check currency and find tomato hornworms.
What You Get: You will get 1*leak detector(Batteries not included), 1*UV protective glasses, 1*portable bag. 1-year warranty & friendly customer service, if for any reasons you are not happy with your purchased, please contact us for refund or replacement.

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8.3

LEAKFINDER

LEAKFINDER LF2001 Automotive Oil-Based Fluid Leak Detection Dye, Services Auto Oil, Fuel, ATF, Power Steering, (6) 1oz Ultraviolet Fluorescent Dye Bottles, Made in USA

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Main Highlights

AUTOMOTIVE LEAK DETECTION SOLUTIONS - The LEAKFINDER brand from TRACER PRODUCTS offers the brightest, most cost-effective, and efficient solution for finding AC and fluid-based vehicle leaks.
PRODUCT DETAILS - Finds leaks in Oil, Fuel, ATF, and Power Steering Systems, Fluoresces Yellow/Green, Works with All Leak Detection Flashlights, Each bottle services 1 vehicle.
LEAK DETECTION MADE SIMPLE - Let the UV fluorescent dye circulate throughout the vehicle system. The dye escapes with the host fluid and collects at all leak sites. Use a LEAKFINDER leak detection lamp to scan and see all leaks glow brightly.
PINPOINT MICRO LEAKS WITH HIGH ACCURACY - LEAKFINDER UV leak detection dyes find the smallest and most problematic leaks that would otherwise be impossible to detect. Quickly pinpoint hard-to-find leaks - including intermittent and multiple leaks.
MADE IN THE USA - Proudly manufactured in the U.S.A., Tracer Products has over 65 years of experience delivering award-winning professional service and the industrys most powerful leak detection dyes, inspection lamps, and diagnostic tools.

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8.1

Muyudam

TRACER Products TP3400 Tracerline UV Fluorescent Oil Leak Detection Dye 6 (Six) 1 oz Bottles

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Main Highlights

Multi-purpose UV fluorescent dye for oil based fluid systems
New Improved Formula
Used industry-wide to detect leaks in any oil-based automotive system
Use with UV and UV/blue light lamp (not included)
Usage instructions and product specifications (pdf) included

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8.1

TSI Supercool

TSI Supercool UV Leak Detection Dye, 1 oz, Orange Tint - 16525

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Main Highlights

Auto & Truck Maintenance
Country of origin : United States
package height : 7.366 cm
package length : 3.048 cm
package width : 3.048 cm

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Our Best Overall Choice

Best Choice

9.7

A/C Pro

A/C Pro Certified Auto Pro Oil and Fuel System UV Dye Leak Detection for Cars & Trucks & More, 1 Oz, 374CS, Universal

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

One application of oil and fuel system UV leak detection dye
For use in engine oil, transmissions, power steering systems and gas/diesel fuel systems
Compatible with all weights of petroleum-based lubricant
Helps locate leaks
Professional grade

Show Price

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