I have 2 accounts. I want to use my lvl 40 mage to aoe grind mobs , if I bring my lvl 27 lock from other account will the level 27 gain decent experience? Thanks for replies.
You’ll get significantly reduced XP when one of the characters in a group is higher level than the mobs. I’m not sure how it works if you are killing mobs the mage’s level, but the aggro radius on the level 27 would probably make controlling stuff for mage AoE a complete mess regardless.
If you want some more specifics about how XP with different level characters works in classic, you’ll probably get a better response in the Classic General Forum, as there are lots of people there with intimate knowledge of the various mechanics.