We propose to perform a survey of the zero-field and applied field muSR in CeRu4Sn6 single crystal. We will do the field dependence of the muSR response at base temperature in order to address two issues: first, the field-driven return to Fermi-liquid dynamics as was found in our physical properties studies, and second, the field-induced anisotropy that has been found along the in-plane versus c-direction specific heat in CeRu4Sn6 single crystals. The first of these two will require comparing the base-temperature zero-field response with that of a suitably high field, while the second part will be focused especially on gauging the field response along the basal plane and the c-directions, respectively. 2 days of muSR beam time on are requested.