Auto Paint Thinner?

[gabkwong]

I wonder what type of paint thinner I should get for the left over paint my body shop guy gave me. It is a little too thick to use as touch up. I like to get something to thin it down a little but I have no idea what kind of base the paint is in. It is Deltron brand made by PPG. Any help is appreciated!

[Rogue]

PPG DT reducer,
you will need only a little bit, ill give you some if you want to take a drive.