Iso Vis Motor Oil Promises Constant Viscosity
Iso Vis motor oil touted as a new type offering constant viscosity under normal driving. Advert says it will not thin out or wear, protects engines, reduces need for frequent changes, and keeps lubrication stable for long distances.
Polarine Motor Oil Ad Promises Engine Protection
An old Polarine advertisement touts rich sturdy oil for modern driving conditions. It emphasizes engine protection, cushion of oil on bearings, and recommends draining and refilling every 500 miles. Available at Standard Oil stations and garages in Indianapolis Indiana.
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Universal Aviation Corporation
Chicago
Kansas City
St. Louis
Omaha
Indianapolis
Cleveland
Louisville
Ydiany
Motor Oul
Standard Oil Company
Indiana
Indianapolis, Indiana