NOVELTY - Fuel filter monitor for a fuel stream having a flow direction comprises: (a) a expanded PTFE membrane (4); and (b) a support structure adjacent to the expanded PTFE membrane, where the expanded PTFE membrane is disposed upstream of the support structure in the fuel stream.    USE - The filter monitor is useful: for a fuel stream comprising jet fuel from a renewable source, non-polar organic hydrocarbon with less than 1% polar contaminants, and jet fuel including less than 0.5% polar contaminant fatty acid, polar contaminant of diethylene glycol mono methyl ether at less than 2% and polar contaminant fatty acid methyl esters or biodiesel at less than 1%; in automotive or trucking, aerospace and industrial mining applications (all claimed); and for filtering and removing water and other solids from a fuel stream.    ADVANTAGE - The monitor: prevents penetration of water to downstream of the fuel wet monitor, where water is in the form of discrete water drops in fuel or a bulk water stream which displaces the upstream fuel; stops fluid flow when challenged with a bulk water stream; contains no super absorbent polymer for water; prevents the migration or passage of non-fibrous particulate into the fuel stream in the presence of fuel stream contaminants including polar contaminants including diethylene glycol mono methyl ether, fatty acid methyl esters and bio-diesels (all claimed); is utilized in fuel streams comprising hydrocarbons with interfacial tensions against water at greater than 23 mN/m including petrol, gasoline and/or middle distillate fuels (diesel fuel, jet fuel, renewable jet fuel, kerosene, Fischer-Tropsch fuels, biodiesel and/or their blends); exhibits lower inherent thickness thus allowing for pleated construction comprising more area in same volume space; and does not show visible evidence of media migration.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) a filter housing comprising a canister having an open and a closed end, where the fuel filter monitor is in the form of a pleated (5) expanded PTFE membrane supported by a pleated non-woven (6) and a tubular extruded plastic support cage, where the seams and edges of the pleated expanded PTFE membrane are integrally sealed in the canister such that a fuel stream passes through the pleated expanded PTFE membrane and out the open end (8) of the canister; and    (2) manufacture and assembly of the fuel filter monitor.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of the fuel filter monitor in a pleated element form.    Expanded PTFE membrane (4)    Pleated (5)    Non-woven layers (6)    Plastic core (7)    Open end cap (8)