1920 Vintage Harley-Davidson Motorcycle Oil Advertisement

Through the Supreme Test - Before an immense audience of over 15,000 people at Marion, Indiana, September 6th, Harley-Davidson Motorcycle Oil demonstrated its absolute fitness as a friction preventive, even under extreme conditions. Ray Weishaar's pocket-valve Harley-Davidson hummed steadily at an average speed of over 73 miles an hour for 200 miles, carrying him to international championship honors, proving that Harley-Davidson Motorcycle Oil is your motor's life preserver. Your dealer has Harley-Davidson Oil in trade-marked cans. 1920 September Harley-Davidson Enthusiast Magazine Back-Issue available at www.DadsVintageAds.com CLICK THE PICTURE TO "BUY IT NOW"