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Are you adding engine oil the wrong way?

Simple exhaust leak test for diagnosing a P0420 trouble code

“Show and tell” | Tips from mechanics #automobile #carrepair #truckrepair #autorepairtips

Most important things to check after hitting a bad pothole

Wiring diagrams are your road map to electrical troubleshooting

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

“Upselling” doesn’t help you or us | Tips from mechanics #automobile #autorepair #upselliing

What an oscilloscope shows that your DVOM can’t

Your owner’s manual is gospel | Tips from mechanics

One-step trick to stop cracks from spreading on parts

What is pulse width modulation? How does PWM work?

Why testing modern sealed batteries takes more than hydrometers and refractometers

Top tips for car and truck fleet maintenance: what repair shops need to know

Five best car and truck tips from mechanics to non-mechanics

Cast manifolds vs. headers: Which is best for performance?

How to install metal cable/zip ties | Dorman 83916

Turbo engine oil change PSA for techs and service writers

How to choose the correct battery for your car or truck

What is a divorced transfer case?

Would you rather practice swapping a flat tire for a spare or learn the hard way?

A smarter way to test compression

How to install metal cable/zip ties | Dorman 86913

What you need to know about banjo-style rear ends

Three easy ways to work like a real mechanic

Dorman Rewards | How it works