Eventually it will get worse. The worst part is where it leaks from, it was all over the underside of my car and all over the exhaust. Oil and high heat don't like each other and it creates smoke and could lead to a fire.

I'd get it done, even though it's a bitch to replace. 10 hours of labor to replace a $15 part.
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96 850 GLT 5-Speed- Sold due to astronomical repair costs.

Had mine replaced in December of '03. Started out slow as a drip, but within about a week had turned into a seep. I would drive home from work and put it immediately on ramps and crawl under and clean the weep hole and surrounding area. As soon as I could wipe it would begin to seep. I kept a close watch, but I had to take a trip prior to fixing. Before leaving I checked the level and after about 75 miles of interstate travel I ended up having to put in about a half quart. This is in my opinion a dangerous rate of loss. I would caution you to continue to check it as often as possible if you decide to wait a while, because it could at any time develope a larger leak around the seal. Make sure you check/clean your flame-trap which could possibly be the factor in the seal failure. You can find instructions on Bay13

If the leak is small and does not change, there may not be any urgency.

However, I looked at a low milage '95 850 that had almost all of its underside covered with oil. Much of the undercoating was cleaned away of softened.

I wonder how much damage had been done to the various materials, such as rubber and plastic, exposed to this coating.

I also wonder how long it took to do this, is it possible that it was one highway trip?

My little warped mind also speculates on weither or not this coating could start a fire.
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3 8s & 2 7s 740,000 miles total

Mine is leaking also. The volume is so low that it doesn't drip on the floor, just makes the bottom of the block wet. I'm letting it go for now. It's about $400 by an experienced mechanic, on his day off.