I service 3 1st gen Acura TSXs with the mighty K24
1 - Wifey's 2006 we purchased new in Dec 2006. Steady diet of Mobil 1 5w30 (a few 5w20) each 5K. 205K on the clock and does not burn a drop.
2 - A friend's 2007 TSX, bought from the local MBZ dealer almost 2 years ago, dealer serviced. 140K, burns about .5 qt per 5K OCI
3 - My sister's 2007 TSX (purchased new) that I gave to a friend after she got a new RX. 105K, quickie lube serviced (semi syn ?), goes through .5 to 1 qt between 5K OCI services.
By the way, these are great cars.