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
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.
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.
Are You Adding Engine Oil the Wrong Way? (VIDEO)
Think you know how to pour oil out of a jug? Are you sure about that? Lemmy and Nick talk about the best oil pour techniques to avoid making a mess.
This tungsten scraper is my new favorite tool.
A fellow YouTuber recommended it. Why not give it a try?
Polishing headlights vs. replacing them! (VIDEO)
Two solutions for yellowed, hazy headlights.
Parallel connectors vs. butt connectors
They look the same, but serve different roles. Here are the very specific scenarios where the lesser-known parallel connector shines.
What’s the deal with permanent and lifetime antifreezes? (VIDEO)
Shop Press’ Andy Greaser breaks down permanent antifreeze and today’s coolant for your vehicles.
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SHOP STUFF
Auto care news and advice you can use.
Transfer cases: how to talk to your customers
You can’t sell what you don’t understand.
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.
VIDEOS
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.
The TPMS tool that pays for itself
Why wouldn’t your shop purchase a few of these?
Tapping V6 – ASE practice questions (VIDEO)
Two technicians are examining a tapping sound coming from a V6 engine. See who has the correct response about what’s causing the noise.