When I was an Engineman in the Navy I went to A School for Lubrication and. Lubricants. Learned all about this Subject. Unless your at the North/South Poles or in Space or at the bottoms of the Oceans there is no advantage of synthetic lubricants. Your just wasting your Money. On board Ships they never Changed Oil,Ever we had a centrifuge for Cleaning Oil. Oil doesn't go bad it just gets contaminated/ Dirty. There's 2 types of centrifuges #1 was The Sharple's Centrifuge which would clean the used Oil(even know it was Black,,,,,,,,it was clean. No Gritty feeling)#2 was The Duvall Centrifuge which was more complex it would seperate by weights. And all types of lubricants, We recycled all lubricants. Now the only thing that both types of centrifuges couldn't do was seperate synthetic Oil from conventional Oil. So if you buy a Generic/Store Brand Oil that's most likely made from recycled Oil guess what??? It's a Synthetic Blend already! I've been building Engines for 45 years and I swear by Tech Oil sold by Wal-Mart.... There brand which is recycled Oil and never had one bit of trouble with it. Synthetic Oil isn't something new,,,,,,,It was invented in the 40s by the Nazis. So unless you plan to drive in Space/ Bottom of the Ocean or to the Poles? Stay with Conventional Motor Oil. AND REMEMBER TO RECYCLE YOUR USED OIL!
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