Claims for motor oil quality are easy to make, not so easy to prove. Quaker State quality is proved two ways in performance tests in engines—in the lab, and on the road.
At Quaker State’s Automotive Laboratory, static engine testing goes on night and day, month after month. On highways, engines undergo the most grueling driving ordeals that can be devised. Quaker State tests passenger car engines, foreign-made engines, racing engines, heavy-duty engines, even experimental engines not yet in production. Data is recorded on factors like engine wear, engine deposits, motor oil endurance, and gasoline economy, under every condition—of load, speed, and temperature.
These tests not only prove Quake State superiority, they help Quaker Stat engineers continually improve the product. Years-ahead Quaker State, super-refined from pure Pennsylvania Grade Crude Oil,…
