Tollers said:
SPD-SL's
Are you sure you don't just need more time getting used to them? If you do want to oil, id suggest the spring would be the best target.
Tollers make a good point.
I had major issues with my SL's (yellow floaters) when I first started. I loosened mine all the way on the tension and they still felt liked they were glued to my pedal. I started to kick in my heal to get out which seemed to get me out when I first started but it did take a while to loosen up. I have never oiled my SPD's, they have naturally loosened over time and I have tweaked the tension to compensate.
My suggestion would be go up and down a quiet road and give them a real workout to see if it helps before adding lube.
Hope you get it sorted