The Model 40530W-AD is a water sensing and particulate removing filter with 30 micron cellulose media which is recommended for gasoline and heavier distillates such as diesel fuel and fuel oils. The 40530W-AD utilizes a standard 1.5 -16 UNF mounting thread 1 inch flow required for today's high flow fuel dispensers. The 40530W-AD is a water sensing and particulate removing spin-on filters designed for use on high flow dispensers. It utilizes an epoxy coated interior shell to eliminate oxidation which can cause pin-hole leaks from the inside. PetroClear filters are not to be used with aviation fuels. The 40530W-AD is not recommended for use with alcohol blended gasoline. Phase separation will not be detected should it occur.