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Polishing headlights vs. replacing them! (VIDEO)

Description Yellowed, hazy headlights aren’t just ugly; they can reduce a headlight’s effectiveness for your customers. Would you rather polish the old lenses, or simply install a Dorman replacement?Related Videos

Parallel connectors vs. butt connectors

Dorman makes an item to join wires, the parallel connector, that is both helpful and widely misunderstood. If one reads reviews of these, they’re often rather negative. More than a cursory examination yields the issue, however: these are often purchased mistakenly by...

What’s the deal with permanent and lifetime antifreezes? (VIDEO)

Description Your customers may have heard the terms "lifetime" or "permanent" antifreeze, but those confusing names have very specific meanings. Make sure your customers know the limitations of antifreezes to protect their vehicles for many years of service.

Vehicle weights are increasing. Can your lifts handle it?

Average vehicle weights in the United States have steadily increased since the mid 1980s, driven by sustained consumer demand for vehicles with more power, features, and room. Hybrid and electric vehicles can be especially heavy with their batteries and motors,...

Diagnostics case study: don’t overcomplicate things

A vehicle recently came to me that made me feel pretty terrible. The customer was not happy, and I know for a fact the shop lost money on the job, so presumably they were unhappy, too. The vehicle—and scenario—seemed ripe for a quick story, because there were so many...

Do you mind working on customer vehicles equipped with dash cams?

When you spot a dashboard camera inside a customer’s vehicle, how do you react? At this point I think we have all seen dash cam videos from customer vehicles that capture what mechanics are saying and doing at work. Some recordings are harmless fun, like this chap...

The story of the very first reverse gear in an American car

Making a car go backwards was not the most important part of the automobile’s development, but it sure is important in its operation. In fact, if the average automobile enthusiast was to guess which American-built car had the first reverse gear, he or she would likely...

How to get a little more (temporary) performance out of your air impact gun

I would like to start this article off by mentioning that yes, I know air impacts are slowly going out of style—which is exactly why you might want to keep this tip in the back of your head. Parts availability can be a challenge for some old impact wrenches, and even...

Forgotten Classics: The 1990-1993 Chevrolet 454 SS Muscle Truck

The 454 SS combines the time capsule looks of the GM GMT400 platform with an entertaining drive that harkens back to the muscle car heyday.

HOT OFF THE PRESS

P0420/P0430—The #1 DTC in the Country

P0420/P0430—The #1 DTC in the Country

And the most misdiagnosed.

Troubleshooting Fuel Trim–ASE Practice Questions (VIDEO)

Troubleshooting Fuel Trim–ASE Practice Questions (VIDEO)

Technician A and Technician B are discussing ways to use fuel trim as a troubleshooting aid. Technician A says that fuel trims that are correcting for a lean condition at high RPM and load conditions indicates a problem in fuel delivery. Technician B says that this condition is caused by a vacuum leak.

Add or Delete These Simple Parts to Help Customers Save Money

Add or Delete These Simple Parts to Help Customers Save Money

Use it or lose it. Looking for an easy way to win over your customers that they’ll enjoy every time they drive? Look at their vehicles from a hypermiler’s perspective.

ABOUT SHOP PRESS

Shop Press is the news and idea hub for everything related to working on cars and trucks, focusing on repair, technology, and wrenching lifestyle. With interesting stories from around the world, features on creative people and solutions, and all kinds of other stuff that’ll make you use your mind and your hands.

SHOP STUFF

Auto care news and advice you can use.

Ferdinand Porsche: Engineering the Shape of Speed

Ferdinand Porsche: Engineering the Shape of Speed

How a visionary engineer shaped everything from early EVs to the world’s most iconic sports cars.

Dealers make house calls. Why not you?

Dealers make house calls. Why not you?

Can independent repair shops benefit by offering mobile service to an increasingly immobile America?

What an oscilloscope shows that your DVOM can’t (VIDEO)

What an oscilloscope shows that your DVOM can’t (VIDEO)

Your multimeter is a versatile tool. But for certain diagnostics, you need an oscilloscope to get a closer look at a vehicle’s electrical systems.

Tire techs: Elevate your work with this one humble task

Tire techs: Elevate your work with this one humble task

A set of tires is expensive. Make it special.

Tools beyond the basics for DIYers

Tools beyond the basics for DIYers

Step up your repair game with sensible choices.

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Are you a wrench and a writer? A counterperson and a communicator? A service writer and a scribe? Get paid to share your experience and expertise with thousands of Shop Press readers.

SHOP STUFF

Auto care news and advice you can use.

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

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

New techs and DIYers should know that not all spark plugs are created, or treated, equally.

Easy trick to transfer gear oil with a simple length of hose (VIDEO)

Easy trick to transfer gear oil with a simple length of hose (VIDEO)

A fluid transfer pump is the cleanest and easiest way to fill a differential, transmission or transfer case with its necessary fluid.

Bitten by a misfire

Bitten by a misfire

Formal education teaches you theory and the real world teaches you the rest.

Beyond the basics: best tools for auto repair DIYers and technicians (VIDEO)

Beyond the basics: best tools for auto repair DIYers and technicians (VIDEO)

The right tools will expand your capabilities and help you to tackle more advanced jobs, but it’s not always easy to know where to start.

“Can you drive a stick?”

“Can you drive a stick?”

It’s been asked of every new mechanic for more than a century. Does it matter in 2025?

VIDEOS

DIYers: Yes, You Can Handle a Window Regulator Replacement

DIYers: Yes, You Can Handle a Window Regulator Replacement

Here are some tips to help get you started.

Betcha Haven’t Serviced the Tool You Use on Every Job

Betcha Haven’t Serviced the Tool You Use on Every Job

The most dangerous piece of equipment in a shop is often the most neglected.

The Other Way to Use a File that Many Mechanics Don’t Know (VIDEO)

The Other Way to Use a File that Many Mechanics Don’t Know (VIDEO)

Need a smooth finish on a part you’re cleaning up with a file? Lemmy shows how draw filing can achieve a clean result with a totally different method of holding a traditional file.