Time to replace the swivel ball fluids. I have had some seeping from the swivel balls & expected low levels. I'm guessing a half a cup of "oil" slowly drained out (I let it drain in with the old differential fluid), but the level hole was plugged with grease instead (One Shot?). Now that I've drained a bit out & the rest of the grease won't flow out - am I stuck disassembling to clean & refill with 90WT oil/One Shot/00 grease? I'm assuming it's a bad idea to mix the two. I guess it's time to order new seals also, since it was seeping with grease. It will be another first for me to take apart a swivel ball (that I was hoping to avoid since I just started driving it again)!