Learn why it’s not a bad idea to charge a little more for the hassle.
Should You Charge More When Dealing with Tire Sealant? (VIDEO)
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HOT OFF THE PRESS
What are Frits? (And Why Does Almost Every Car Have Them?)
You probably see them every day, and that’s by design.
Cat DTC Diagnosis (P0420) – ASE Practice Question (VIDEO)
Technician A says other codes should be diagnosed before replacing the converter for a P0420 code. Technician B says an upstream exhaust leak can trigger the code. Who is correct?
What Shape Is a Piston?
Cylindrical? Not really.
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SHOP STUFF
Auto care news and advice you can use.
What does dark brake fluid really mean? (VIDEO)
Don’t just rely on brake fluid color to determine its condition.
Air Conditioning Service Fundamentals – ASE Practice Question (VIDEO)
A/C systems are evolving with new designs and refrigerants, making accurate diagnosis and repair more important than ever.
Don’t Overlook the Elementary
Draw a hard line when it comes to basic diagnostics.
ADAS Alignment and Calibration – ASE Practice Question (VIDEO)
Technician A says thrust angle must be set to zero on many ADAS-equipped vehicles during alignment. Technician B says the steering angle sensor and front wheel position must be correct before camera or radar calibration. Who is correct?
What are Federal Motor Vehicle Safety Standards (FMVSS) and Why are They Important?
A nationwide framework of safety regulations has transformed vehicle design and saved countless lives since its introduction in 1968.
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SHOP STUFF
Auto care news and advice you can use.
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.
The JDM Class of 2001 Comes of Age
The Japanese Domestic Market performance car you’ve waited 25 years to drive is finally ready for legal export.
It’s That Time of Year to Change Your Clocks. And Your Gasoline Blend.
Did you know that fuel blends change with the seasons in the United States?
Ferdinand Porsche: Engineering the Shape of Speed
How a visionary engineer shaped everything from early EVs to the world’s most iconic sports cars.
Service Writers: Don’t Leave Your Greatest Diag Tool in the Shop
Techs can’t solve the problem that can’t be found
VIDEOS
The One Tool That Knows More Than Any Tech (VIDEO)
A factory service manual gives you every spec, procedure, and diagram—stop guessing, start fixing smart.
How Does Regenerative Braking Affect Brake Wear?
Regenerative systems slow the vehicle electrically, but the reduced use of friction brakes creates new maintenance challenges.
Air Conditioning Service Fundamentals – ASE Practice Question (VIDEO)
A/C systems are evolving with new designs and refrigerants, making accurate diagnosis and repair more important than ever.