[Stocker]

If your clutch is one that you can unbolt the two (front & back) halves and take it apart, you might be in luck. The temperature-sensitive silicone fluid is available in small vials at Toyota dealerships. I had to refill mine once several years ago and it's still good. Of course it also depends on if yours will seal back up again.

If it just leaked a very small amount you might still be good..... but I'd watch it very closely for any more leaks.