Title complications

Hey Lovelies,
It is no secret that I have trouble with titles. I'm working on a second New Adult novel. Beneath the Scars is currently with Jenn, she's worked on Family Ties both edition and is owner of Modern Electra Editing. So while she is editing Beneath the Scars I'm looking for cover ideas and writing other stories. I'm going to enjoy my time before classes start up once again. I don't know how much time I'll have for writing, I'm hoping some because I don't want to work myself into bad stress point like last time. I'm going to try to find the balance in grad school, that and I'll be working two jobs, yay. I do have an idea for the cover though :)

So the title problem I'm having is with my New Adult story The Four Purposes of Oil. I like the title, it is different, but I worry it might be too long. It is a bit of a mouthful. So do you guys like The Four Purposes of Oil or would you like Service and Repair better? Or is Service and Repair too corny? Figures I have a cover idea for this and I'm only a little over 13K into it...

The Four Purposes of Oil/Service and Repair

Chapter One Noah
Chapter Two Payton