Radiator and Cooling System UV Dye (1 oz.)
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Interdynamics Radiator and Cooling System UV Dye (1 oz.)

Part No. 375CS Warranty Details  

Fit of this part varies by vehicle & equipment specs Type of Fit

Radiator and Cooling System UV Dye

Product Features:
  • For radiator antifreeze/coolant
  • Not compatible with DEX-COOL type coolants
  • Single application
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Container Size:1 oz
Refrigerant Type:ALL

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3 Questions | 5 Answers
Displaying questions 1-3
  • Q:

    Currently I have radiator flush with water in my Chrysler Van. I need to test for leaks. Do I have to put coolant in to test with the UV Dye?
    Asked on 3/24/2014 by Pam from Gulf Breeze, FL

    1 answer



      Hi Pam, good question! Yes, in order to test the leak using this Interdynamics Radiator and Cooling System UV Dye, you have to put coolant in with the UV Dye.

      Answered on 3/26/2014 by Steve from AAP
  • Q:

    What color does it glow under UV and what color is the dye. I want to color Zerex G-05 so I can see it.
    Asked on 6/2/2013 by deh

    1 answer



      This Interdynamics Radiator and Cooling System UV Dye (1 oz.) (Part No. 375CS) is an Engine Coolant UV Dye. Single application of radiator / engine cooling system UV leak detection dye. Safe for use in all vehicle makes and models (except 1996 and newer GM models that use DEX-COOL® coolant) and it is compatible with all types of anti-freeze except GM DEX-COOL coolant. For any further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.

      Answered on 6/3/2013 by Max from AAP
  • Q:

    It says that you can not use this product for Dex coolent. Why not? Is there another leak detector that would work?
    Asked on 4/25/2010 by JD from Sioux Falls SD

    3 answers



      The most likely reason that you can not mix this with Dex-Cool coolant is because the additives in it do not mix well with Dex-Cool and can either cause corrosion or clogging. I do not see one listed online, but if you have a Advance Auto Parts store near you, you might find one there.

      Answered on 7/13/2010 by Mike from AAP
    • A:

      Yes, there is another product specifically for Dexcool systems. Alter your search and include Dexcool.

      Answered on 8/17/2012 by Smitty from Farmington, MI
    • A:

      You can probably use it as long as you do a flush and change the fluid later.

      Answered on 2/15/2014 by Art from Milwaukee, WI
Displaying questions 1-3

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