Do you use dye to check for antifreeze leaks?

yes you can used dyes for antifreeze leaks see www.naradmarketing.com they have the strongest and best dyes available in the market at a fraction of the cost.

---- No, you don't have to. Antifreeze / coolant has a UV dye already in it (unless it is "GM dexcool", then you would have to buy a dye and put it in your radiator) . Get a "black light bulb" and put it in your shop light and look around your hoses.

They make special flashlights with UV bulbs, etc, but just go to the hardware store or Walmart and get a bulb.