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
Rust exhaust hole – ASE practice questions (VIDEO)
Which of the following is the most critical result of a rust hole in an exhaust system?
Before selling a vehicle, make sure to remove personal data (VIDEO)
Smartphones, laptops, and computers are normally cleared of all data before selling or discarding to protect personal information.
Dust Cap Tool Explained (VIDEO)
How many times have you seen a hub dust cap with ugly dents from a sloppy installation? A dust cap tool is a handy tool for installing caps on customer vehicles without damaging the cap’s appearance.
SHOP STUFF
Auto care news and advice you can use.
LT-series vs. P-series tires
The truck and SUV have never been more prolific than they are today. Learn when to sell each type of these tires.
Diagnostics case study: don’t overcomplicate things
One basic vehicle checkover has several lessons to teach.
Do you mind working on customer vehicles equipped with dash cams?
As dashboard cameras become more common, repair professionals should know how to deal with them.
The story of the very first reverse gear in an American car
Reverse is an innovation that’s easy to take for granted—but it was a revolutionary addition to the automobile.
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.
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.
How to use a lockout kit (VIDEO)
Powerful tools—if you know how to use ‘em.
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.
Ten (sort of serious) questions every service writer should ask
Skillful interrogation is a wonderful way to make your professional life easier. Here are a few suggestions on where to start.
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.
VIDEOS
Square drive: make or buy before you need ‘em
Female metric square drive plugs were new to me. They might be to you, too.
Customer states truck was vandalized… Do you know what happened here? (VIDEO)
Each line item confirms it—cheating doesn’t pay.
Watch this video on the invention of the Ford V-8 engine
Ford made a V-8 engine affordable to the mass market consumer for the first time.