I bought a 2000 grand vitara in August 2011 and 1 1/2 months later found out the upper oil pan had a leak so they had to take out my engine, etc.

Now over the last couple of months every two weeks the coolant resevoir is low and I need to fill it. This weekend I checked it and it was almost empty. Today I went out to my car to drive home and notice a puddle about 15 inches long under the tow piece on the back right and it had a greenish tinge. Is this possibly where my coolant is going and if so what could it possibly be that needs fixed now?

Thank you in advance

Did it come out of the exhaust?

No, it's on the passenger side back of the car near the white tow hook