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Boost Isn’t New! A History of Turbocharged Cars

It seems every automaker has jumped on the forced induction bandwagon over the last decade. While some say there is no replacement for displacement, a turbocharged engine makes a pretty good argument to the contrary. Turbocharging is hardly new, though. You can read...

Two Common Oil Change Mistakes That Techs Can Make (VIDEO)

Description Too many technicians make these simple mistakes while performing oil changes for customers. Dorman Training Center instructor Pete Meier points out a pair of errors that can turn easy jobs into big headaches.  Related Videos

Fundamental Electrical Knowledge – ASE Practice Question (VIDEO)

Description Technician A and Technician B are discussing electrical fundamentals. Which of the following statements is INCORRECT?A) All electrical circuits are made up of a load, a source, a control, a circuit protection device and a path that connects them all.B)...

Is an Appointment-Only Shop Schedule Wise or Madness?

You probably have an “Open” sign hanging in the shop window or door. But what if you didn’t? Could you—and your shop—function as a shop without regular hours? The answer, like so many things in life, isn’t completely binary. Before we begin, maybe it makes sense to...

What does dark brake fluid really mean? (VIDEO)

Description Don’t just rely on brake fluid color to determine its condition. Dorman Training Center instructor Pete Meier demonstrates how to use a quick DVOM test for a more precise brake fluid condition check.Related Videos

Beware the SAE Lead

The SAE connector is instantly recognizable to many technicians. Commonly found on electrical junctions that need the ability to be disconnected often but ought not be reversed, the plug seems like it should be a no-brainer—however, it’s anything but. If the picture...

DSO Settings – ASE Practice Question (VIDEO)

Description Technician A says that when using a lab scope, most signals can be captured using the 20/20 Rule - that is, by setting up the scope to capture a range of 0-20v on the vertical scale and setting the time base to 20ms per division. Technician B says that a...

Why Does an Electric Car Need a Radiator?

Have you ever taken a glimpse at the front end of an electric vehicle and thought, “Wait…is that a radiator?” Why does an electric car even need a radiator when it doesn’t have an internal combustion engine? Turns out there are plenty of things on an EV that need...

Watch This Video on the Inventor Who Put Lead in Gasoline

by | May 1, 2025

Recently, I went down an internet rabbit hole about why gasoline once had lead in it and how it got removed. In my searches, I found this video on inventor Thomas Midgley Jr., who not only invented leaded gasoline to combat engine knocking but also synthesized chlorofluorocarbons (CFCs).

Midgley’s work transformed cars and transportation: cars were more reliable, more convenient, and more comfortable as a result of his work. However, in doing so, he also invented a gasoline that was dangerous to both humans and the environment. For better or worse, he raised the bar for what the automobile could be and do.

With CFCs, Midgely made air conditioning and refrigeration more commercially viable and affordable when it was not, improving the quality of life, food safety, and industrial processes for Americans. Again, however, he also invented a chemical that was bad for the environment.

Midgley was not immune to the dangers of his inventions, as he himself suffered from symptoms of lead poisoning and had to take a break to recover.

Check out this video on Midgley and his inventions, which, despite their benefits, have unfortunately also caused damage to human life and the environment.

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