The older (black box with green band) supertech filters were made by Champion Labs. The new Supertech (in the blue box) look a bit different, are smaller and look to be of less robust design. Are these the "e-core filters, and are these still Champion made?
The AC Delco filters from Walmart look the same as the old style Supertech
The AC Delco filters from Walmart look the same as the old style Supertech
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