Quite honestly I had no idea what kind of silicone grease to buy or use.

The PDF MSDS here: https://www.w8ji.com/images/Cars/Battery/09980.pdf

It appears from this document and reading Wikipedia that this would be an excellent choice for our intended purpose.

Tks for posting.

Has any one found a source for biologic post pump parts? I am going to need a new hose soon.
The model I have uses crimped on fittings on the upper end.