What’s synthetic motor oil made of and is it any better for the planet?
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As I understand it from more than ten years ago (hopefully it hasn’t changed since), the difference from regular oil and synthetic is actually the molecule size. Every molecule in the synthetic bottle is 39 microns in size. They somehow filter regular oil so that only 39 microns sized molecules are separated from the rest. They do this because they determined that that is the best size for heat tolerance and viscosity. Regular oil is good but every bottle is technically different where as every bottle of synthetic is identical.
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