I bought the Tamco euro thinner because some 2-part Urethane coatings are sensitive to thinners. Tamco sent me a lifetime supply of euro clear by mistake and I couldn't send it back, so I bought a lifetime supply of thinner to go with it. I never tried DT or generic with the Euro clear, and now i don't need to, 'cause I bought 5 liters of the right stuff.
It doesn't pay to gamble that your thinner is going to work with another brand's paint.