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Old 05-05-2020, 10:33 AM   #22 (permalink)
EcoModding Lurker
Join Date: Sep 2018
Location: United States
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It may be 0w16 for the first 1000 miles but all motor oils shear downgrade with use, getting thinner. Eventually the viscosity goes back up as the volatiles evaporate but still there needs to be a limit to how thin you should go. For me, it's just not worth going uber thin and risking my engine internals to gain 1-2 mpg.
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