2008 Advenger STX

If it is a v6 it would be the 2.7, the 2.4 would be the four cylinder and in all honesty the better of the two. The 2.7 has a bad reputation because of oil coaking issues. If the oil hasn't been changed on a regular basis which buying a used car you never really know, it causes sludge build up which leads to oil starvation which leads to a blown motor. I would stay away from the 2.7. That's my two cents worth.