Photograph of men and automobiles in garage with tanks of lubricant, Southern California, 1931. "Complete Greasing Saves you $[ilg]; Try Our New 'One Stop' Lubrication, Eliminates Greasing between drains, Saves you time, money, repairs, Pennzoil, One Stop Lubrication Service; Essex Free Wheeling, Murhy Motors [ilg]; Specialized Lubrication, Pennzoil, Let us explain this service, 7-10 Special lubricants required to correctly lubricate the modern automobile, 40 major [ilg]action [ilg]ntson the average car [ilg]ed careful lubrication regularly; Master Lubrication Guide"--on signs. "8V 87 81 CAL 31; 9X 14 31 CAL 31"--on license plates. "Pennzoil"--on uniform. "Pennzoil lubricants"--on containers. "Specialized Lubrication Chart, Pennzoil, 40 [ilg] to lubricate the average car, 6 to 10 different lubricants are needed, motors"--on sign.