I have a 1999 Outback, and I am the original owner. I recently noticed a strong antifreeze smell, and I really only noticed it after a long (an hour or so) drive. I took the car to the dealer, who diagnosed the problem as leaking core/freeze plugs. Since the engine is still under warranty ( a Jasper rebuilt was installed in 7/08), the plugs were replaced at no cost to me. The very next weekend (this past weekend) I noticed the smell again, although fainter. The next morning, we looked under the car and noticed a radiator hose that was pretty much flattened. We looked online, and found that this seems to be indicative of a faulty radiator cap. We removed the cap, and found there was a ton of nasty-looking greenish slimy crud all over it. Also seemed to be a tiny amount at the top of the radiator, around the inside - and we also noticed that the fluid level, inside the radiator itself, seemed to be low.
So we went down to NAPA and bought a new cap, and replaced the old one, and wiped out the inside top of the radiator as well. When we did, we also added water to the radiator until it was full. The little plastic overflow container already appeared to be at the "full" level. After we drove the car, the hose was fully round again, as I would have expected it to normally appear.
When I drove back home last night, I didn't notice any smell, but it was at night, and much cooler of course, so that may have been a factor. However, this morning, I looked under the car before starting it, and the hose was collapsed…though not completely flat as it appeared when we first noticed it.
So…is the collapsed hose normal? If not, since I already replaced the cap, what else could cause this? Is it a problem if the car is not overheating?
Also, wouldn't the dealer mechanic have needed to drain (and completely refill) the cooling system to replace those plugs? And doing so, would it not be a reasonable expectation that he would have noticed both the collapsed hose, and the cruddy cap? :-\ I'm starting to think I am taking my car to the wrong place for service.