Is it possible to mix a fluorescent dye in your car oil to make leak detection easier?

It seems pretty simple in theory, but is there a dye on the market that would be able to both survive the temperatures within a car's engine and not affect the lubricating properties of the oil at the quantities necessary to be readily visible under UV light? My old car's been leaking a lot out of a bunch of small places, I really wish there was some way to pinpoint the leaks...