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FJC 4923 UV Dye - 1 oz.

Q: How long does it take for this stuff to show up once it is put into the oil?

It seems to show up almost immediately. Run the system briefly to mix in the dye, and watch for the leak. I found it easier to see if it was not full daylight. I got a nice bright UV flashlight for about $12. Also, a little goes a long way ;-).

Q: Does this work with all types of fluids?

It should. it has most of the fluids on the label you can put it in. I used it for an oil leak.

Q: will this work for brake fluid?

You have to distribute this throughout your brake system. How? since you asked :) Add 1/4 bottle to bottle of brake fluid. Remove as much fluid from reservoir and replace with dye'd fluid. Start bleeding brakes until you see dye (using light). I estimate 5 to 10 brake pumps per caliper. after 4 calipers flushed, drive or pump brakes (while running) then UV light system and see. Havent seen a brake system leak since I forgot to tighten the bleed screw when I was 17! But I have heard of pin holes in highly salted cities like NYC.

Q: can i use it for smoke machine, especially for the purpose of finding EVAP leakage?

Short answer, I don’t think so. Long answer- It would be helpful if you clarify the intended use. Are you talking about a theatrical smoke machine or, an HVAC system? If the latter, it is made to be put in with the refrigerant. Then you can see leaks in the system with an ultraviolet light. I can’t imagine how you would use this with smoke. Also pretty sure you wouldn’t want to breathe it. In general , this product works. I use it to find engine oil and power steering leaks on cars. First thing I found was that a little bit goes a long way. I over used it at first. Start with a fraction of what you think you need and then add more if necessary.

4.6/5

Product ID: 506221705

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Description

FJC 4923 UV Dye - 1 oz.

Specifications

Manufacturer	FJC
Brand	FJC
Model	4923
Item Weight	1.47 ounces
Product Dimensions	2.7 x 1 x 0.9 inches
Item model number	4923
Manufacturer Part Number	4923

Have a Question? See What Others Asked

How long does it take for this stuff to show up once it is put into the oil?

Does this work with all types of fluids?

will this work for brake fluid?

can i use it for smoke machine, especially for the purpose of finding EVAP leakage?

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TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

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