[AL5AcE]

From my belief, the free showdown raise is used when you have a mediocre hand that you're going to call down anyway and have fold equity. Then you might be able to cause an opponent to improperly fold his hand on the turn while expending the same 2 BBs to see the showdown, making the turn raise the superior play.

Another benefit is that next time you have a strong hand with position, your opponent may be obligated to call your turn raise with something mediocre fearing that you may be going for the free showdown.

I wouldn't consider this hand a free showdown play since villan isn't folding much of anything and you have a better than average hand. In this case I will probably bet the river depending on what comes. I like raising the flop and betting the turn.