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Message: <blockquote data-quote="Johnny O" data-source="post: 610426" data-attributes="member: 61743">I'll probably get a lab test done this time.  I did 5w-20 Motorcraft vs. 0w-20 Mobil 1 in my wife's car and over 5000 miles the wear metals and viscosity were nearly identical.  The Trac has Motorcraft from the dealer in it now, my first four oil changes were free.  I have another free one to go but frankly waiting at the dealer isn't worth my time right now because I'm very very busy at work.  I can do it way faster myself.  Got some Pennzoil Platinum I'm going to try and compare lab results with the Motorcraft.Used oil analysis costs $20 at Blackstone.  They will send you collection bottles free, you send it back with some old oil and a check for $20.  Anything else is just speculation.</blockquote>