1995 Ford Windstar transmission problems

I asked the seller at ford to completely service the van before I would buy it. He said his mechanic would. I checked the van out two weeks later, low on oil, no brake fluid, trans fluid very low, no water hardly at all in receiver, then the starter went out, replaced it no good, replaced switch, no good, brakes gone out, can't keep fluid in systems, engine light came on, emission problems, mechanic stalls for the hour amount, and still can't fix/test II code. Inside lights dim when extra. Lights come on.

1995 ford winstar transmission failed at 72,252 miles. Transmission began smoking and fluid leaked out. While changing oil gasket, found chunks of metal in pan. Despite changing oil gasket and putting it new transmission fluid, car still hesitates and jerks at stop light, sign. Told transmission needs to be replaced.