Lesser Mana Oil

Common, Enchanting, item level 50, item 20747

Changed from Classic: the tooltip differs on the highlighted lines below.

Lesser Mana Oil

Enchanting

Requires Level 40

Use: While applied to target weapon it restores 10 mana to the caster every 5 seconds and increases healing by up to 20. Lasts for 30 minutes.

Sell Price: 10s

Changed from Classic (see below).

Classic's version

Trade Goods

Requires Level 40

Use: While applied to target weapon it restores 8 mana to the caster every 5 seconds. Lasts for 30 minutes.

Sell Price: 10s