Type of Raycor Fuel Filter - 30 M, 50M?

30 micron........20XXPMOR

Your Caterpillar secondary filters (assuming you use the Cat branded high efficiency filters) are 5 micron so using them on the primaries would be double filtering and would only increase your manintenance cost.
 
Frank, I think I'm starting to smell the roses.... I have 2 mic on the racors and 2 mic on the engines and for the first time last week I starting losing rpm's, checked the vac gauge, it was showing 15, the other was showing 2.... I replaced the two racors and the engine is running fine !
 

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