Vacuum Oil company made the Gargoyle quart cans, the taller skinny style with the caps, in the teens and 1920's. See eBay
listing 230796607713 . There are crossover quart cans that have both the Gargoyle logo at the top, and the Pegasus and shield at the bottom that date from the late 30's. See eBay
item 350561821722 . By 1940 S-V used the Pegasus logo with lines, eBay
item 330718801704 . Hope this helps a little with your timeline. Most all Gargoyle signs are from the teens and twenties, although the symbol had been used by Vacuum Oil since before the turn of the century.