I recently lost pressure in my clutch pedal on my 98 AWD and was all ready to bleed my clutch and replace the slave cylinder. I figured I'd check my fluid level before I went through all that and found my resovoir not only dry but a huge hole through the bottom. It appears to have been melted but nothing up there (that I can see) generates anough heat to do so. Does the fluid eventually go bad and rot or something? My dad has owned all sorts of Porsches, Corvettes and street rods and whatnot and he even doesn't have a clue what went on. Has this ever happened to anyone else????