---
product_id: 306971870
title: "Interdynamics 374CS Certified A/C Pro Oil and Fuel Systems UV Dye"
brand: "a/c pro"
price: "287 kr"
currency: NOK
in_stock: true
reviews_count: 6
category: "A/C Pro"
url: https://www.desertcart.no/products/306971870-interdynamics-374cs-certified-a-c-pro-oil-and-fuel-systems
store_origin: NO
region: Norway
---

# UV dye for pinpoint leak detection Works in oil, fuel & power steering systems Operates up to 250°F safely Interdynamics 374CS Certified A/C Pro Oil and Fuel Systems UV Dye

**Brand:** a/c pro
**Price:** 287 kr
**Availability:** ✅ In Stock

## Summary

> 🔍 Spot leaks before they spot you – stay ahead with UV precision!

## Quick Answers

- **What is this?** Interdynamics 374CS Certified A/C Pro Oil and Fuel Systems UV Dye by a/c pro
- **How much does it cost?** 287 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/306971870-interdynamics-374cs-certified-a-c-pro-oil-and-fuel-systems)

## Best For

- a/c pro enthusiasts

## Why This Product

- Trusted a/c pro brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted Industry Leader:** Top-ranked automotive dye with 4.5-star rating from over 2,500 pros
- • **Precision Leak Detection:** UV dye reveals hidden leaks instantly under blacklight
- • **Multi-System Compatibility:** Seamlessly works with engine oil, transmissions, power steering, and fuel systems
- • **High-Temperature Resilience:** Effective performance up to 250°F ensures reliability in extreme conditions
- • **Single Application Convenience:** One-ounce dose covers a full system, saving time and hassle

## Overview

Interdynamics 374CS UV dye is a professional-grade leak detection solution designed for oil, fuel, transmission, and power steering systems. Its high-temperature tolerance and single-application formula make it a trusted choice for automotive experts seeking fast, accurate leak identification.

## Description

Interdynamics oil and fuel system UV leak detection dye is for use in engine oil, transmissions, power steering systems, and gas/diesel fuel systems to help determine where there might be a leak.

Review: Useless - Does not identify leak
Review: Added to my lava lamp to make the lava (wax) black light responsive. - Added to my lava lamps to make the lava (wax) UV/black light responsive. Works great. A little goes a long way. A drop or two is all you need. Using more will change the color of your wax. Highly recommend. Fluid is dark red but glows green on any color wax. Don’t expect it to make orange wax glow orange, etc. It does not change the color or leach into the fluid.

## Features

- Contains one application of oil and fuel system UV leak detection dye

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002M4G24U |
| Best Sellers Rank | #59,204 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Trim Dye |
| Brand | A/C Pro |
| Brand Name | A/C Pro |
| Customer Reviews | 4.5 out of 5 stars 2,526 Reviews |
| Global Trade Identification Number | 00047876013741 |
| Included Components | QUEST Auto A/C Recharge |
| Item Highlight | Engine Oil, Transmissions, Power Steering Systems, Gas and Diesel Fuel Systems, Professional Grade |
| Item Type Name | Auto A/C Recharge |
| Item Weight | 0.1 Pounds |
| Item weight | 0.1 Pounds |
| Manufacturer | Interdynamics |
| Material | Plastic |
| Material Type | Plastic |
| Measuring Range | Normal operating temperature and pressure ranges of vehicle systems |
| Measuring range | Normal operating temperature and pressure ranges of vehicle systems |
| Model | 374CS |
| Mounting Type | Flange Mount |
| Mounting type | Flange Mount |
| Number of Items | 1 |
| Number of Packs | 1 |
| Output Type | visual |
| Part Number | 374CS |
| Specific Uses For Product | Automotive leak detection |
| Style | Oil and Fuel Systems UV Dye |
| Style Name | Oil and Fuel Systems UV Dye |
| UPC | 047876013741 |
| Unit Count | 1 Ounce |
| Upper Temperature Rating | 250 Degrees Fahrenheit |

## Product Details

- **Brand:** A/C Pro
- **Item weight:** 0.1 Pounds
- **Material:** Plastic
- **Measuring range:** Normal operating temperature and pressure ranges of vehicle systems
- **Style:** Oil and Fuel Systems UV Dye

## Images

![Interdynamics 374CS Certified A/C Pro Oil and Fuel Systems UV Dye - Image 1](https://m.media-amazon.com/images/I/61BIGw3L+tL.jpg)

## Questions & Answers

**Q: Will i need to change the oil after adding the product or can i run it 3k miles?**
A: You probably don't need to but....I personally would add the UV dye right before you need a oil change. That way you can drive your vehicle for however long. Probably a good 2 days, drain the oil/ fix the problem, then refill with fresh oil.

**Q: do you really need the yellow goggle to see the dye?**
A: I had no problems seeing the dye without the glasses.

**Q: can this dye be mixed with mineral oil and used in smoke test machines**
A: The answer is yes.  I used it in my smoke machine to test an engine in my 1996 BMW Z3 1.9.  It worked fine.

**Q: So i just pour all of this bottle into engine oil and look with blacklight?**
A: Thats exactly what I did to locate a hard to find oil leak. BTW: to get a clean read, you will need to clean the engine beforehand, add the dye and then drive 20 miles or so to locate the leak.

## Customer Reviews

### ⭐ Useless
*by A***Q on 24 August 2024*

Does not identify leak

### ⭐⭐⭐⭐⭐ Added to my lava lamp to make the lava (wax) black light responsive.
*by R***T on 26 July 2026*

Added to my lava lamps to make the lava (wax) UV/black light responsive. Works great. A little goes a long way. A drop or two is all you need. Using more will change the color of your wax. Highly recommend. Fluid is dark red but glows green on any color wax. Don’t expect it to make orange wax glow orange, etc. It does not change the color or leach into the fluid.

### ⭐⭐⭐⭐⭐ An absolute time saver.
*by D***M on 24 April 2026*

If you are chasing a "phantom" leak that seems to be dripping from the sump but you suspect is originating elsewhere, this UV dye is an absolute lifesaver. I used it to track down a stubborn leak on my Alfa. From underneath the car, everything pointed toward a sump gasket failure, but the dye revealed a completely different story. Once circulated, the fluorescent trail showed the oil was actually weeping from a seal much higher up the block and simply trailing down the casting.

## Frequently Bought Together

- InterDynamics Certified Auto Pro Oil and Fuel System UV Dye Leak Detection for Cars & Trucks & More, 1 Oz, 374CS, Universal
- 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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*Product available on Desertcart Norway*
*Store origin: NO*
*Last updated: 2026-10-12*