DEF is easy to contaminate, and fortunately, it’s also easy to test. Check to be sure that your customers’ DEF is up to spec with these simple tests.
Easy tests for diesel exhaust fluid (DEF) contamination (VIDEO)
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HOT OFF THE PRESS
The cars of Stephen King stories: books and film adaptations
It’s much more than just Christine.
Shop Profile: Top Auto Center
Just when you thought The Golden Rule was out of style, this independent repair shop and used car sales center proves otherwise.
Are you servicing your car’s oil correctly?
It might be time to rethink oil changes.
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.
Use the Little Radiator—and Have Customers Do the Same
Cars have a backup cooling system—use it when the situation demands!
Engine knock – ASE practice questions (VIDEO)
An engine exhibits a knocking noise. During a cylinder power balance test, the noise abates. Which technician has the correct diagnosis?
“Can I borrow a…”
We’ve all heard the question that starts like this. So will you lend tools?
A visit to Elite JDM (VIDEO)
A playlist of videos from a recent trip to a Dorman contributor’s personal shop.
Why you shouldn’t throw out zip tie tails after a project (VIDEO)
Before you toss those zip tie scraps in the trash, consider saving them for plastic repair jobs. In many cases, the plastic used in zip ties will bond with common automotive plastics with the help of a soldering iron.
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SHOP STUFF
Auto care news and advice you can use.
It’s All About the Process
To reach a successful diagnostic conclusion, you have to follow the right diagnostic path.
Stainless doesn’t mean stain-proof; just ask Tesla Cybertruck owners
Spoiler alert: be careful running it through the car wash.
Low-mileage JDM automatics: Worthwhile or worthless? (VIDEO)
Nick and Lemmy check out a flex plate from an imported Japanese automatic transmission with very few miles under its belt.
Fuse box-compatible circuit breakers are the ultimate spares when space is limited
Throw a set of these resettable “fuses” in your toolbox.
Harmonic balancers – ASE practice questions (VIDEO)
A defective harmonic balancer can affect the accuracy of ignition timing readings or a defective harmonic balancer can damage the crank. Which technician is correct?
VIDEOS
Watch how magnetizer/demagnetizer tools work in this excellent video
Demagnetizers demystified.
Tool review: Klein 3255 bull pin
You can’t beat it. Well, actually, you can.
What does horsepower really mean? (VIDEO)
The essential unit of automotive power has an unexpected history.