ORIGINAL: Krawlin
Just so you know, don't expect that S-600 to last very long. They are known for pretty good power but run hot and have a short life. I had a pair of them in my E-Maxx, they ran very very hot and only lasted 2 runs before the brushes actually came off the brush-springs and fell out of the motor.
EDIT: I actually did a water break-in method with mine, and submerged it in light silicone oil after break-in (spray type silicone oil, very light) to displace any water and lubricate it.
The S-600 is only rated to 8.4V but i've run them at 11.1V for with very good success. The S-600 is a very good cheap alternate motor to run in Pede's, rusty's and Slash's but it's not a good choice for the E-Maxx. Combine the weight of the Maxx together with the 14+V and it's no surprise that the motors died.
I've owned several S-600's and run them in various different cars and trucks. In the 3+ years i've been running them I have only had one fail and that motor had well over 300 runs on it and the brushes simply worn away. I'm not 100% sure about silicone based oil but I know that normal oil (WD40) is a bad thing when it comes to motors. This also could have contributed to the motors failure.
BLAZING ANGEL - You'll be happy with the S-600 as long as you don;t mind running a little extra voltage. You'll find that the perform OK on 7.2V but really wake up when run with 8.4 and 9.6V. Don't worry about running 9.6V on them. You won't hurt it as long as you don't over heat it.