What to do? Replace those seals.
If you can change brake pads, then it's a matter of a few more steps and equipment.
Here's what you'll need (you may use something else but this is what I used):
- Socket Set
- Wrenches
- Allen Keys
- A
OEM Front Caliper Seal Kit # GAYR 33 26Z [I'd suggest getting 2 of these in case you screw up like I did]
- Jack and stands
- New Brake Fluid
- Disc Brake Spreader Tool [works better than a C Clamp]
- Brake Parts Cleaner Fluid/Spray
- Good Lighting
- Good Ventilation
- Bin to Catch Used Brake Fluid
- Several Clean Lintless rags
- Someone to help bleed the brakes (and maybe the clutch) unless you have Speedbleeders
- Gloves If You Wish
- A Small Thin Tool to Remove Piston Seal like a Dull Putty Scraper
- Air Compressor suggested
- Brake Slider Lube of Your Choice
- Eye and Ear Protection If You Wish.