I assume poisons and sharpening stones would work the same way...
Applying Brilliant Mana Oil to ANY weapon will remove its enchantment upon log or zoning. This is an issue new to this morning, 08/15/06 and has been tested. The bug is 100% repeatable. Here are the steps:
1) Have any weapon with an enchantment. Benediction with +55 healing for example.
2) Apply Brilliant Mana Oil to Benediction
3) Logout or Zone
4) Log back in.
5) +55 Healing enchantment has been REMOVED.
DO NOT USE MANA OIL until this issue is fixed, guys.
Yes, this has been reported on the bug forums, but as no one reads those.. you guys need to know that this issue exists.
Please reproduce on PTR to back up my statement, and avoid ruining your guild's raids.