I have a 1996 trailer & boat with sup-r-lube bearing / greasing device, looks like a bearing buddy. This weekend I put grease in them ( first time since I purchased in Dec ), after about +2 ozs. the old grease started to come out the front. I was kinda greenish/whiteish looking, possilby some water mixed in is my guess. Is this correct or did I overfill and possibly damage them, or should I continue to fill until the new color grease comes out too? Should the grease go thru and out the back of the hub? Please advise. I plan to go on a 6 hour trip and dont need to be on the side of the road with a locked up hub.