T&T: Secondary Filters Clogged

[Gil Johnson]

I'm a recent convert from 2 micron primaries to 10 micron primaries.  My opinion is that there's little trash in the less than 10 micron size.  Therefore, why add to premature clogging of the primary with sub 10 micron crap. I too am not a fan of changing the engine mounted filter.  More importantly to me is not knowing when the secondary needs changing.  I'm going to change the secondary every 200 hours and see how this works out.
  
Does anyone really know how much 2-9 micron crap we can expect in our 
fuel--good or bad?  Again, my opinion is not much.

  Gil
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