So last week my family took our boat up to Lake Shasta. At some point on the way there, it looks as if all the grease in the wheel hubs exploded and covered the rims. The odd thing is that this happened on all 4 wheels. And with the next trip in a week there's no time for a shop. It drove the whole way back like that without any issues. Trailer is about 10 years old, and trailer buddy is stamped on the axle. Does anyone know why or what could cause that to happen?