I decided to drain and flush the wife's radiator today. I drained it via the drain valve, (I know, there are faster ways), pulled the top hose off of rad., and hosed out motor. I seemed to get about two gallons out. When I filled it, I poured a gallon of distilled water into the rad, added coolant conditioner, and then proceeded to add coolant. I got about 8 oz in it. 8-9 quarts came out, and 4-5 went back in.:icon_eek: I figured there must be a bunch of air trapped, so I ran it with the cap off until the t-stat opened. I squeezed out air, added a little more, blah, blah. It still didn't take much more. I am afraid to drive it anywhere. At best, I didn't get it drained all the way and now my mix is WAY too watery. At worst, I have a huge bubble somewhere. And yes, I did have the heat on while running. Thank you in advace, my Subaru Gods.
Edit: I didn't exactly measure what came out, but it sure looked like more than one gallon!
Edit: I didn't exactly measure what came out, but it sure looked like more than one gallon!