Time for the first oil change and I can't decide whether to go with motorcraft 5w50 or amsoil 10w40. I want to make sure I maintain my warranty, but I don't want to put in the motorcraft if it shears down to a 5w30 and actually creates more damage to the engine. From what I've read so far, it seems like the 5w50 motorcraft has higher lead content afterwards and will shear in the first 100 miles. This info was found for a boss 302, so I was wondering what you guys use.
Its a 2014 GT w Track package.
Its a 2014 GT w Track package.