Any idea on how a tech priest character can make sacred unguents in the field? I assume forbidden lore adeptus mechanicus is necessary. Maybe he needs it to know the tech blessings needed to sanctify the oil.

If a tech priest has tech use +10, forbidden lore: chymistery and forbidden lore: adeptus mechanicus could he make secured unguents?

I think FL (AM) is necessary to know how to bless sacred oil, and while FL (Chymistry) can let you know all the ingredients, the actual skill to make sacred unguents is Trade (Chymist). Personally, I would also allow to use Trade (Armorer) with -10 modifier.

That sounds about right. Thanks.