This paper introduces key concepts of Substance Free Logical Phonology (LP: Bale et al. 2014; Bale and Reiss 2018; Reiss 2021; Dabbous et al. 2025), and applies them to an analysis of the different behaviors of segments that surface as [v] in Hungarian. All data and the idea of relying on an underlying representational distinction between two v’s are based on the excellent presentation of Sipt ́ar and To ̈rkenczy (ST,2000). My goal is to highlight the subtle feature logic involved in LP rules by developing an LP alternative to ST’s analysis.