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I've never seen this topic covered very well.
How much does a secondary filter need to flow? I know that the bigger the filter the longer it will last, but what flow rate is needed.
Specifically:Will a racor 645 flow enough for a stock duramax and will it last as long as the stock primary filter?
How much does a secondary filter need to flow? I know that the bigger the filter the longer it will last, but what flow rate is needed.
Specifically:Will a racor 645 flow enough for a stock duramax and will it last as long as the stock primary filter?