Keep your models running their best with Premium Medium OIl from the Hob-E-Lube line. This medium viscosity oil (310, SSU @100°F), includes additives to provide excellent rust protection and oxidation resistance as well as prevent sludge build-up. Proven anti-wear additives are also added to the basic oil. Ideal for use on HO or larger scale trains, it can also be used with R/C cars airplanes and boats, as well as many household applications. Medium oil comes in a special bottle with metal cap and built-in needlepoint applicator.