Hello everyone, I have just been reunited with my 1991 FSB with a 300 CI, automatic transmission. I owned this rig a few years ago and made the huge mistake of selling it. I just bought it back and may have water in my oil. It is leaking water from what appears to be the thermostat housing. The guy who just owned it replaced the thermostat and may or may not have seated the housing properly. The oil is chocolate color and thick. Its still brown and not milky, but doesn't look right to me. The bronco has a brand new radiator now so that leads me to believe that the bronco may have over heated. The previous owner has not been driving the bronco much in the last few months. Has anyone here had this problem with their oil or the thermostat housing? Any input would be greatly appreciated. Thank you in advance.