What color is this after mixed with motor oil?

It’s a fluorescent blue when viewed under a UV light

How good is this dye? Does it really work?

Yes. makes oil turn an iridescent blue color.

How long do you run the engine to mix this stuff?

Not sure what system you are running the dye through but generally I would recommend running for several minutes until your vehicle comes up to temp. That would be especially true if you are checking for a coolant leak so the thermostat has time to open. Good luck to you.

Can you use this on power steering fluid?

No, use one specifically listed for use in power steering fluid systems.

Uv Fluid Leak Detection Dye 8 Oz | Desertcart Portugal

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€ 69.92

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Sold byAmazon PortugalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔦 Illuminate hidden leaks before they become costly disasters!

FLUORESCENT ORANGE TINT - Instantly visible under UV light for quick diagnostics
COMPACT EASY TO USE BOTTLE - 8 oz self-measure bottle designed for hassle-free application
PINPOINT LEAKS WITH PRECISION - Add just 1/4 oz per quart for flawless detection
VERSATILE FLUID COMPATIBILITY - Works seamlessly with oils, fuels, and hydraulic fluids
TRUSTED AMERICAN CRAFTSMANSHIP - Proudly manufactured in the USA for reliability and performance

TSI Supercool TD8 is an 8-ounce UV fluorescent dye designed for automotive fluids including motor oil, diesel, hydraulic, and brake fluids. Easily mixed at 1/4 oz per quart, it reveals leaks under UV light with a bright orange tint. Made in the USA, this trusted additive simplifies leak detection and maintenance for professionals and enthusiasts alike.

Specifications

ASIN	B008PKWH6C
Best Sellers Rank	#19,270 in Automotive ( See Top 100 in Automotive ) #277 in Automotive Oils
Brand	TSI Supercool
Brand Name	TSI Supercool
Color	Orange Tint
Colour	Orange Tint
Compatible Material	Plastic
Compatible material	Plastic
Customer Reviews	4.6 out of 5 stars 586 Reviews
Global Trade Identification Number	00672264001750
Included Components	Unit^Instruction Guide
Item Form	Liquid
Item Type Name	Automotive Accessories
Item Weight	272 g
Item form	Liquid
Item weight	272 g
Manufacturer	TSI Supercool
Manufacturer Part Number	TD8
Model Number	TD8
Number of Items	1
UPC	672264001750
Unit Count	1 Count
Unit count	1 Count

Reviews

A**E

Fluorescent Dye additive

7.08.2025

M**I

Good product

7.10.2024

C**O

Buen detector de fugas

Practico de utilizar y efectivo para esas fugas difíciles de encontrar

18.01.2026

R**.

Easy to use

3.03.2026

T**G

Very helpful on my tractor

14.04.2026

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