I had a friend on college who was only average looking and a little chubby but he understood the law of averages, I guess. I never saw anybody ask girls for their phone number so much. They usually turned him down but he dated some very pretty girls. I lost touch with him after I transferred...
I didn't watch the video.
Back in the dark ages of internal combustion, when motor oil was barely refined, tung may have had some beneficial property that somewhat reduced sludge buildup or reduced foaming, perhaps at the cost of lubricity, etc... kinda like prescribing whiskey for a headache...
There are way to many variables to be able to begin to diagnose this without more info. I would suggest checking to see if there are any Cobalt forums to look for common issues with your year and model.