After getting my AC working I volunteered to help a friend out installing a backup sonar system on his mini van. He lives about 90 miles away so I though it would be a good exercise for the Loyale to stress test it since I am planning on a trek to Eastern Wa for the 4th and if there are any issues, I want them sorted out before I trek across the state.
I drove from Bremerton to Sammamish the long way around. Car behaved really well the first 60 miles. Then I noticed that it appeared that when the AC was on, the temp gauge would rise. This continued for about 20 miles or so. Each time I put on the AC the temp gauge would move to the halfway mark and when I turned it off it went to about the 1/8th mark, slightly above the C.
It wasn't until about the last 10 miles or so I noticed the temp started to climb to the 75% mark. I finaly just turned off the AC and it held steady at 75%. I was able to pull over at McDonald's and then looked under the hood. I could see something had splashed on the undersde of the hood - it looked like coolant. I could find any leak. I started the car and again couldn't find a leak. I filled it up with my reserve bottle of coolant mix that we all carry in the trunk .
It took almost the entire bottle. I drove the last 10 miles and again when I got to Samammish, the temp was at 75% and the overflow was bone dry. I turned the car off and let it sit thinking it was some sort of small leak. We went to O'Relliy's to get some things for my friend's van (in his van) and I got some coolant and stop leak (no lectures about using stop leak please). Anyway I put in the stop leak and the coolant mix and then started it up. Nothing hapned until after about a minute I revved the engine and had a gusher of fluid from the upper radiator hose. Stop leak won't fix that one . I got the hose at O'Reilly's, replaced it and when I drove home I was aggressive with it. This was the original 1993 hose so my bad for not replacing it when I did the lower hose 5 years ago. This is one Subaru part I can truly say I got my money's worth!
So for a great bit of the time I was driving with a burst upper hose and what must have been almost no coolant. Why didn't my engine overheat? It never once hit the H. How is this possible? Could the air flow alone have been enough?