That is what I have used for years but it has been discontinued.
There are other brands of biodegradable oil if that is important
to you but they are quite a bit more expensive than the Pennzoil.
If they have any more of the Pennzoil left I’d go back and get it.
https://www.ebay.com/itm/Bel-Ray-Marine … SwldRZ6lm1
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.