3 people reported this problem
rear heating line rusty and suddenly start pouring coolant out ,if u see rust dont take it long trip!!! you will get stuck! on Mazda MPV
rear heating line got very rusy and leaked. its so expensive to buy the parts almost $1200. So i made copper tubing from homedepot and made my own coolant line. working good.
2002 Mazda MPV 125,000 mi, Visitor
rear line at back of engine rusted out and had to be replaced