Had leaky oil seals at different parts on 3 of my cars; wira, BLM and honda. All 3 were solved by using rubber restorer called ATP AT-205 Re-Seal. INM, now it has been bought over by Lubegard and renamed to Seal Fixx.

Using it was simple, just mix a capful (estimated) of it into the PSF/ATF reservoir, and let the rubber restorer work its magic for a few days. If it is still weeping a little, add half a cap more.

On BLM and Wira, it was the seals at PS pump that began leak. On honda, it was the PS hose crimps, well known to fail with age.

As far as I can tell, no. The mixed fluids are still in service in my cars. It's so good that I even dripped a drop or two of AT205 on the reservoir cap oil seals, which were flattened at contact point and started to leak. And as expected after the treatment, no leak was observed after cleaning the reservoir area with degreaser.

Somehow SealFixx is cheaper than AT205.