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Primery Filter
When I first got the bus the Power Tech Gen had a Racor 120AP 30 micron filter on it I replaced it with a new style filter and housing a Racor R12P it is a 30 micron filter there is also a R12T a 10 micron filter should I keep using the R12P a 30 micron filter?? This is the 1st filter in line is that primary or secondary? Top photo is the original the bottom is the one I put on to replace the top one. New Racor R12P 30 micron. Is’s weird the top old filter says secondary.
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