You first.

The ad copy:

GO GUM carburetor cleaner keeps engines regular. GO GUM — removes gum, varnish and sludge in carburetor and fuel system. Regular use of GO GUM prevents sluggish performance, rough idling, stalling and fuel waste. Works while you drive.

The laxative for your car.

Another dependable from DeMert
Demert & Dougherty, Inc. / 5000 W. 41st Street / Chicago, Illinois 60650