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
EGR system – ASE practice questions (VIDEO)
Under what conditions would the EGR system be expected to be operational? We have the correct answer.
A low-tech favor you can perform for every customer (and yourself)
Break out your paint pen—you’re the service writer now!
ASE test prep requires more than sample questions (VIDEO)
Do you have a study guide to prepare for your ASE exams? Which parts of that study guide do you use the most? Dorman Training Center instructor Pete Meier explains.
SHOP STUFF
Auto care news and advice you can use.
Are you servicing your car’s oil correctly?
It might be time to rethink oil changes.
How to get a little more (temporary) performance out of your air impact gun
“Rebuild in a can” is not the right way to fix the tool, but it will get you by until you can repair it correctly.
Are automakers starting to rethink OTA microtransactions?
Microtransactions spark unexpected microaggressions.
Top 5 mechanical oddities on RHD vehicles, and how to deal with them if one rolls into your shop
Working on a right-hand drive vehicle requires deviating slightly from a mechanic’s routine.
The only two mistakes you can make on your first timing belt job (and why you shouldn’t worry about them)
T-belts aren’t scary at all.
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.
Watch this video on the four stages of grief for mechanics
A Facebook reel that applies a psychological model to wrenching.
TECHNICIAN CHALLENGE: Can you identify these dash lights? PART 4 (VIDEO)
Think you know your dash lights? Shop Press contributors Keith, Miriam, Chris, and Greaser try their best to identify all kinds of lights, symbols, and indicators.
Several tips to make brake line removal less of a headache
Don’t break fittings—break ‘em free.
Quick tip: how to use an old phone to check vehicle lights by yourself
That old smartphone can actually help when you don’t have a second set of eyes to help out.
Shop Upkeep Essentials (VIDEO)
Shop Press’ Miriam discusses tasks and tips to maintain a well-rounded shop.
VIDEOS
The final days (and cars) of AMC
In November 1988, two employees snuck a camera into AMC’s Kenosha plant for a farewell tour.
What is a core charge?
A little glimpse into the world of making old parts new.
How do you inspect a serpentine belt for wear?
Inspection of a belt goes beyond the old standbys of checking for cracks and fraying.