If the grease is leaking past the seals and bushingds try STP oil treatment. Even though its not intended for this kind of use it will work great. It takes forever for the stuff to run past the worn seals and bushings and it will give the gear box better lubricating and less effort to turn the steering wheel. believe me !! I have tried many suggestions and I found this to do the job. It takes all summer for the stuff to leak out compared to a small week with all the other suggestions.