Here's The Difference Between Synthetic And Normal Motor Oil, And What The Numbers On The Bottle Mean

I just changed the oil in my Nissan Pao last week, and in doing so I was warned—several times—that my plan to replace the conventional oil in my car with synthetic was a terrible idea. But you know what? It’s not! That got me thinking that maybe a little oil refresher might be of use. Not to you, of course, you know