This youtube video....just turn down the volume, lest you be inundated with nonsense. No surprise to see the video host surprised that it didn't go how they thought. Unless Mobil sponsored the video. The biggest "retard" comment is "Wal Mart oil". Wal Mart does not refine oil. Their self branded products are refined by Shell, according to the interwebs. What this shows is how engine wear occurs at start up, and conventional is no match for synthetic at cold temps. Really, turn the volume down, then watch. This topic has been beat around this site for many years. Just not lately with "social media" ruining everything (not just forums).
[video=youtube;uQ_vxdO_9nc]https://www.youtube.com/watch?v=uQ_vxdO_9nc[/video]
[video=youtube;uQ_vxdO_9nc]https://www.youtube.com/watch?v=uQ_vxdO_9nc[/video]