[Mydiamond]

I am currently on the hard.

I noticed I Have a leak of the lubricant on the outside through the shaft seal.
It is. Dripless seal
Anyone replace / repair this before?

[hiccup]

While there is one dripless system that uses ATF for lubrication, most dripless systems use raw water for lubrication. Also keep in mind that when you winterize the engines, the antifreeze used to winterize the raw water system flows through the dripless lubrication system, exiting on the outside of the boat at the shaft. It would be possible to misinterpret this antifreeze as lubrication.

If your dripless system uses raw water for lubrication, it is likely antifreeze you're seeing.

Now, if your dripless system does in fact use ATF for lube, and that's what's on the outside of the boat, then that is a different story, and you will have to replace your seals. Typically when the seals go, it is worth replacing the entire system due to age.