Fram Ultra failures?
- Thread starter Vigilant
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How could it achieve 99% @ 20μ in the ISO 4548-12 test if there was any dirty oil leakage there (or anywhere)? What about filters that just have a metal on metal junction with no soft seal in that location, or filters that have a metal on metal bypass valve?
Originally Posted by ZeeOSix
How could it achieve 99% @ 20μ in the ISO 4548-12 test if there was any dirty oil leakage there (or anywhere)? What about filters that just have a metal on metal junction with no soft seal in that location, or filters that have a metal on metal bypass valve?
Anything possible.
How could it achieve 99% @ 20μ in the ISO 4548-12 test if there was any dirty oil leakage there (or anywhere)? What about filters that just have a metal on metal junction with no soft seal in that location, or filters that have a metal on metal bypass valve?
Anything possible.
Never mind, just found my answer with closer reading.
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