Hose blows off compressor outlet

[eco-rich]

The hose clamped to the compressor outlet blew off.
2005 at 81,000 miles
We limped into the Ford dealership in Roseburg, Oregon at about 5 pm.
The hose clamp to the compressor outlet was missing.
We purchased a new clamp and a mechanic still in shop was nice enough to put it on for us at no charge.

We left the shop and headed back out and the hose clamp blew off again within 10 minutes.
Now on the side of the freeway, I found the hose clamp still in the engine compartment and re-installed it.
Okay for another 20 minutes before it blew off again.
At this point I wired the clamp to another clamp so that it would not get lost.

After the sixth time of the clamp blowing off, I purchased a replacement hose.
There is a dash light on now - a yellow engine outline.
The old hose appeared to have a slight film of oily-ness inside of it.
That fixed that problem.

Now, after 1500 miles of travel, I'm seeing a slight loss of coolant.
No drips or anything. . .just needs topping off every so often.

Question; Is this coolant loss a symptom of some known problem related to the hose oiliness issue?

I don't have tech knowledge and am "dealer dependent".