I bought a 2002 Mustang GT for my first car a couple of months ago and checked the coolant. Yupp, looked like iced tea! So I decided to to do a flush. First I drained it and took out the petcock for better flow and will replace after flush but not very much came out so I thought that I was just really low on coolant but then I started to put water in and it only took about 2 and 1/4 gallons of distilled water but from my knowledge my system takes about 3 1/2 gallons. I thought that it was strange but just repeated the process several times but yet still the same results. I drained the petcock and the engine block drain plug on the driver side but not enough came out. I even tried just raising the front with two jack stands and I leveled it out with all four. This leads me to believe either their is a drain plug behind the starter on the passenger side/ somewhere else or that I am doing something horribly wrong. Please help me!