My Z seems to like to drink coolant. I just got back from a 6 month deployment and since I've been back every time I drive my Z when I check the fluids the next day it's been between 8-12 ounces low on coolant. In the two years I've had my z I've had to replace 3 of the 4 turbo cooling lines, the radiator overflow line, the upper and lower radiator hose and the radiator. Every time ive either seen a wetspot in the garage, seen it dripping or heard it. This time I don't have any of that. I've also been checking my oil and it's still at the same level and doesn't appear to have any coolant in it. Does any body have any suggestions on where I should look for the leak or how else to find it. Thanks for all the help in advance.