Pros
As an inexperienced/younger engineer, Sunoco Logistics feeds you to the wolves. This is awesome if you're looking for an exciting, challenging, and enthralling position. They allow/force their junior engineers to take on a lot of responsibility early on, which facilitates skill building and knowledge/experience acquisition at an accelerated rate. There is also fairly strong engineering leadership, which does allow the more timid at heart to take on the steep learning curve a little more cautiously, if desired. It's definitely a sink or swim culture, and I love it. I've learned more, experienced more, and had more fun than I have had in any other company.
Cons
It's a fairly small company, so it does lack in structure ~ particularly in data retention and accessibility. It can be difficult and frustrating at times to dig up information necessary to perform your job functions.