# Why milk jugs can't test gas pump accuracy

> A viral TikTok trend has drivers checking if gas stations short them fuel, but the test is flawed and dangerous.
- Title: Why milk jugs can't test gas pump accuracy · Family Handyman
- Summary: A viral TikTok trend has drivers checking if gas stations short them fuel, but the test is flawed and dangerous. Milk jugs aren't designed to measure fuel…
- Keywords: gas stations, shrinkflation, fuel pumps, viral trend, consumer safety, milk jugs, gasoline, pump accuracy, weights and measures, cpsc, fuel containers, milk
- Source: Family Handyman — https://familyhandyman.com/article/milk-gallon-gas-station-shrinkflation
- Author: Alex Shoemaker
- Published: 2026-09-23T20:03:49+00:00
- Read time: 1 min
- Topics: gas stations, shrinkflation, fuel pumps, viral trend, consumer safety, milk jugs, gasoline, pump accuracy, weights and measures, cpsc, fuel containers
## The viral milk jug test
Drivers are pumping what the dispenser says is one gallon into empty milk jugs to check if gas stations are short-changing them on fuel.
## Why milk jugs don't work
Milk jugs aren't measuring devices. Their shape, handle, and empty space at the top make it impossible to judge an exact gallon by sight.
## How officials actually test pumps
State and local inspectors use specially designed containers to measure fuel accurately. They pump a set amount and compare it to the pump display.
## The serious safety risk
Milk jugs aren't made to hold gasoline. The U.S. Consumer Product Safety Commission warns they lack the construction and safety features of approved fuel containers.

> Gasoline emits flammable vapors, and a milk jug lacks the construction and safety features of an approved fuel container.
## What to do instead
If you suspect a pump is inaccurate, keep your receipt, note the pump number and fuel grade, and report it to your state or local weights and measures office.
## Key takeaway

Milk jugs aren't designed to measure fuel accurately, and putting gasoline in them creates a serious fire hazard. Report suspected pump problems to your state's weights and measures office instead.