Pure Oil Co. v. Minnesota

Background

The State of Minnesota sued a large oil and gasoline dealer to recover inspection fees charged between February 1, 1913, and April 25, 1915. Minnesota law required testing and labeling of illuminating oil and gasoline before sale, including a fire test for oil and gravity tests and a conspicuous Gasoline label for gasoline. The trial court found that the dealer brought 9,914 barrels of oil and 81,998 barrels of gasoline into the state in tank cars, unloaded them at its place of business, and held them for sale. The court also found that testing and labeling informed the public, warned about volatility, and helped prevent fraud.

Reasoning

The central questions were whether the inspection fees were so large they functioned as a revenue tax on interstate commerce and whether the gasoline inspection exceeded the State’s power by failing to protect public safety. The Court reviewed past decisions that allow reasonable inspection laws and fees that directly promote safety or prevent fraud. It accepted the trial court’s factual findings as conclusive, noted the receipts and expenses reported for 1909–1915, and observed that the legislature later reduced the fee from 10 to 7 cents and then to 5 cents. Given the evidence and deference to the legislature’s judgment, the Court concluded the fees were not “obviously and largely” excessive and upheld the law. The Court did not decide whether the oil and gasoline were in interstate transit when inspected.

Real world impact

The ruling lets Minnesota continue routine inspections, labeling, and fee collection for oils and gasoline handled and sold in the State. Oil dealers who bring products into Minnesota remain subject to testing and fees. The decision affirms that courts will defer to state findings of public safety and legislative choices about inspection fees unless the fees are clearly excessive.