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Reply to "Supertech synthetic oil from Walmart"

quote:
Originally posted by John Micetic:
... I personally would never leave the same oil for 50,000 miles regardless what anybody says. Changing oil is way too cheaper ... I am not going to jeopardize $40,000 value by saving $50 on skipped oil change.

Your disbelief in manufacturer's claims about extended drain interval is understandable, but (only) oil analysis is proven method to confirm or deny them. Besides acquiring a trust into (particular) manufacturer’s claim you'll have (very) pragmatic view into engine condition. That is “the tool” for making a selection between manufacturers by eliminating dishonest ones (if there are).
Complying with time based oil analysis is nothing else that giving money away. By my opinion worse of that is to arbitrarily decide about time for oil change. Should we believe that you have (much) better tests and methods than laboratories?
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