I just picked up a 2002 Ford Escape XLT V6 4x4 with 83K on it. I would like to make this motor last a while and perform its best (Duratec 3.0L). The manual says to use Motorcraft 5w-20. I'm guessing that is what the dealer put in. However, I want to drain and put in something else that will provide me with better protection. Any suggestions? I'm a noob when it comes to oil, but most people hear know a thing or two when it comes to oil. I really appreciate your help!