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You cannot say that because a clearance is X filtering to X will protect you.
Inter-atomic and inter-molecular forces attract and the particles clump up and form chains and pyramids................... A good rule of thumb is to filter to 1/5 the minimal clearance.
Unfortunately such a filter will create too much backpressure so the easilest way is to drain old full of tiny particles oil frequently.
If 2/10ths [99.8%] are passed how long does it take to accumulate enough to bridge the clearance gap? A month? A week?
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