Basically what’s the difference between the two that causes one to be a 25k mile filter and the other a 15k mile filter, is it due to the size with one being smaller filters vs larger filters or is the construction and material different in one vs the other looking to go back to Amsoil filters due to the awful quality I’ve been getting from recent Fram Ultra filters, for an example my 2010 crown Vic can use EaO series filters if civilian trim but can only use EA for interceptor models