Since this car is getting old and we have put alot of money over the years, we don't want to invest alot more. Lately, the brake light has been coming on alot and staying on. If you add brake fluid, the light goes out, but we seem to be doing this alot, so my husband suspects a leak. Is this an expensive job to repair? Can my husband find the leak himself? Is it dangerous to drive when you are leaking brake fluid? We can't afford a new car right now, so any help would be appreciated.