Stir 90 parts of powdered slacked lime into 100 parts of rosin oil. Heat the mixture and stir until a uniform paste-like syrup is obtained. Then heat 550 parts of rosin oil one hour, with 2 parts of calcium hydrate, and allow to cool. Skim off and add with constant stirring 10 parts of the rosin soap, prepared according to the above. This grease may be colored by the addition of a small amount of any pigment.

Another

Heat heavy paraffine oil, rosin oil, and tallow of each 60 parts, and oleic acid 30 parts. Saponify the mixture by adding 15 parts of powdered lime and 2 parts of 98 degree soda lye.

Powdered graphite mixed with tallow, or heavy petroleum residue in the proportion of 20 parts of graphite to 80 parts of grease is a useful lubricant for heavy work.

Pure graphite is used alone as a dry lubricant.

Prepare a rosin soap by melting 100 pounds of rosin in 200 pounds of soda lye of 15 degree Baume, heat until a clear paste is formed. If a heavier paste is desired, use 60 pounds of 35 degree Baume soda lye to 100 pounds of rosin. Compound the rosin soap with an equal amount of crude pine tar, heat, and mix thoroughly. This forms a suitable axle grease for all ordinary purposes.