Pull the tube and clean out the hole real good with some brake cleaner on a rag. Then when installing the tube back in put some RTV at the top 1 inch or so of the tube. When you seat it in, it will create a seal. I just did this yesterday.
And yes the dip stick is same for all 2.5s. I have a list of things that are the same and stuff that is not, based on years of the 2.5