NOVELTY - Producing a diesel fuel comprises: hydrotreating a feed, which has a boiling range of 215-800 degrees F including a biocomponent portion (108) to produce a hydrotreated feedstock with sulfur and nitrogen contents of less than 50 parts per million by weight (wppm) and less than 20 wppm, respectively; and dewaxing the hydrotreated feedstream by exposing the feedstream to a ZSM-48 containing catalyst.    USE - The method is useful for producing a diesel fuel.    ADVANTAGE - The ZSM-48 containing catalysts isomerize the feed to form biodiesel by minimizing cracking reactions. The method provides the feed with sufficiently low content of sulfur and nitrogen contaminants. The diesel fuel produced by the method has cloud point of less than or equal to -40 degrees C, n-paraffin content of less than or equal to 8%, preferably less than or equal to 5% and cetane index of at least 85.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) producing a diesel fuel, comprising either providing a diesel range feed having a boiling range of 215-800 degrees F containing a deoxygenated biocomponent feed that is optionally blended with at least one other mineral, biocomponent or synthetic feed, where the diesel feed has sulfur and nitrogen contents of less than 5 wppm, respectively and dewaxing the diesel range feed under effective catalytic dewaxing conditions by exposing the feedstream to a ZSM-48 containing catalyst, or hydrotreating the feed at a pressure of less than 500 Psig to produce the hydrotreated feedstock with a sulfur content of less than 50 wppm, nitrogen content of less than 20 wppm, and a cetane index of at least 80; and    (2) a diesel fuel based on a biocomponent source, comprising a cetane index of at least 75, cloud point of less than or equal to -35 degrees C and n-paraffin content of less than 10%.    DESCRIPTION OF DRAWING(S) - The figure illustrates a reaction system suitable for producing the diesel fuel.    Biocomponent portion (108)    First hydrotreatment reactor (110)    Hydrogen treat gas stream (115)    Separation device (122)    Dewaxing reactor (140)