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Service Writers: Don’t Leave Your Greatest Diag Tool in the Shop

Today’s piece starts with a one-question quiz that’s not a trick question: in your shop, what is your best diagnostic tool? It’s not a meter or a scan tool or a stethoscope, though those all are handy items to have nearby. It’s your technician. And as much as leaving...

Why Your Shop Should Be Using Loaded Knuckles to Save Time and Money

It’s midday on a Friday, and an older-model Subaru rolls into the bay in need of new wheel bearings. In the past, this would have meant a few hours with the shop press, possibly a torch, and maybe some choice words to get the job done. But it doesn’t have to be that...

Use the Little Radiator—and Have Customers Do the Same

Disclaimer: If a car is overheating and it is possible to safely exit the road and stop the car, that should always be the first course of action to avoid the risk of fire. The solution described in this article should only be used where that is not possible. If a car...

PSA: The Right (and Wrong) Ways to Handle Iridium Spark Plugs

For the vast majority of vehicles on the road, swapping out spark plugs is gravy work. Yoink the old plugs, make sure the replacements meet the necessary gap spec, install the new plugs, and button up the ignition system. You’re in and out of there in no time, right?...

Tool Review: Permatex 25240 Thread Locker

Disclaimer: This chemical was purchased at full retail price at the expense of the author, with no compensation from the retailer or manufacturer to write about the item.Be honest: do you always check the manual for the correct grade of factory-recommended sealant on...

Try Doing It the Wrong Way

Today’s article is composed of two quick tips that are distinct and different, but interrelated because they’re used on the same items: the humble fasteners we remove and install hundreds of times daily. These tips are both geared to newer techs since we all must find...

Modern Power Window Switches: Smarter than You’d Think

When was the last time you rolled down the power windows in an older car or truck? I’m talking at least pre-2000. The older, the better. As a passenger, you’ll find that every door has a mix of buttons, switches, locks, and handles to mess around with, plus maybe a...

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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