Etsyntha No. 3-5 watch oil with dispenser 8ml The partially-synthetic watch and instrument oil from Dr. Tillwich "Etsyntha" is a German quality product based on differet synthetic esters, natural hydrocarbons and polyalphaolefines. Aging stabilization combined with corrosion protection ensures its use in the field of watchmaking. This partially-synthetic clock oil No. 3-5 is best suited for metallic sliding combinations, for springs and pivots bearings from 1mm to 5mm diameter in alarm clocks, wall clocks, pendulum clocks and switch-clocks. The partially-synthetic watch oil grade 3-5 replaces the previous classic watch oils grade 3, 4 and 5. Technical data: Viscosity at 20°C: 140 (mm2/s) Pour point: -15°C Density at 20°C: 0.91 g/cm Temperature application range: -10 to +80 °C