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Reply to "GROUP III"

Hello, first try here. Valvoline calls some of their product premium conventional oil and that is what I would call a group 3 product base oil.True synthetic oils only have in them what the maker wants, with mineral oil they try to remove what they don't want in there and additize to correct what they can't remove. Moving from group 1 to 2 and 3 they get progressively cleaner and closer to only having what they want them to contain.
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