The hydrocarbon rich phase (L2) of the system trichlorofluoromethane CCl3F / water (electrolyte) / nonionic surfactant has been investigated by means of NMR self-diffusion measurements, and dielectric spectroscopy. The dielectric spectra were recorded between 50 MHz and 5 GHz and fitted to a Cole-Cole model function with an additional Debye term. The main relaxation was due to a polarization inside the aqueous droplets (Maxwell-Wagner-Sillars relaxation). The NMR self-diffusion data display a low molecular self-diffusion for both water and surfactant over a broad interval consistent with a droplet structure. However at the highest CCl3F concentrations the rapid diffusion of the nonionic surfactant reveals that the aqueous droplets are most likely stabilized by means of gas hydrates at the w/o microemulsion interface.