I don't think there is anything remarkable about Hyundai filters.
However, there are reasons to avoid some of the generic filters and even
the low-end brand names such as Fram. Many of them are cheaply made
using paper end caps on the filter media and inferior anti-drainback
valves, the latter which can cause valve-train clatter during cold starts.
Yes, there is at least one web site that has a bunch of filters that a
guy cut apart and dissected. He didn't have a way to test them for
filtration, etc., but just looking at the internal design, components
and type and amount of filter media was enlightening. It didn't take a
rocket scientist to see the difference between the standard Fram and
Wal-Mart generic filters and a real filter like a Purolater, NAPA Gold, etc.
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