and internal-combustion engines. Ewing sold his interest to Everest, who carried on the company. Vacuum was bought by Standard Oil in 1879.

It had used "Mobiloil" automobile lubricating oil brand since 1904, and by 1918 it became recognizable enough that the company filed it for registration as a trademark (it was registered in 1920). When Standard Oil was broken up in 1911 due to the Sherman Antitrust Act, Vacuum became