Hi & welcome to EM,
What are your tire pressures? Have you had the alignment checked lately (do you need to)? What generation Taurus do you have?
Edit: Is this what your car looks like?
If so, then you might see a (small) benefit from an upper grill block? Otherwise, that is one of the most aerodynamic (looking) front ends that Ford has ever made.
http://en.wikipedia.org/wiki/Ford_Ta...2.80.931999.29
http://en.wikipedia.org/wiki/List_of...dels#1996-1997
I Googled the weight of the 1997 model, and it comes up with 3,327 pounds, BTW.