This must be a common problem of the seal where the steering shaft enters the rack; my '99 developed a leak at that seal at 95,000 miles. I tried different leaks stops that supposedly swell the rubber but they don't work. The only one that works is the thick Lucas steering leak stop that almost makes the leak go away because the fluid is so thick (one pint every eight months as opposed to every month). I hate even this leakage, but unless you can afford the time to pull the rack yourself and buy the seal and replace it, shops will only replace the rack ($800 at Midas). The only problem with the thick fluid is a groan at startup in cold weather until the fluid goes past some valve (had this also in Canada in the winter with the regular Toyota fluid).