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
ICYMI: Secondary hood prop positions
Props to second place, too.
Automotive terms that differ in other English-speaking countries
Are they C-clamps or G-clamps?
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.
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SHOP STUFF
Auto care news and advice you can use.
Testing Battery State of Charge – ASE Practice Question (VIDEO)
Technicians discuss battery testing, one says open circuit voltage of less than 10.5 volts indicates a bad battery, while the other says that a reading of 12.5 volts indicates an 80% state of charge. Who is correct?
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.
Why a magnetic drain plug is a worthwhile upgrade (VIDEO)
Do your customers know the benefits of magnetic oil drain plugs? Swap out their standard drain plugs to help protect against unnecessary engine damage.
Brake booster valve – ASE practice questions (VIDEO)
A customer states the brake pedal falls slightly when the brakes are applied while starting the engine. Which technician response is correct?
The final days (and cars) of AMC
In November 1988, two employees snuck a camera into AMC’s Kenosha plant for a farewell tour.
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SHOP STUFF
Auto care news and advice you can use.
Troubleshooting a “No A/C Compressor Engagement” Fault
Why a compressor clutch doesn’t engage, and tips to find the cause quickly.
How do you inspect a serpentine belt for wear?
Inspection of a belt goes beyond the old standbys of checking for cracks and fraying.
Brake rotor thickness variation – ASE practice questions (VIDEO)
On a car with disc brakes, what is the most likely symptom of a vehicle with rotors that measured out-of-spec for thickness variation when measured at several places on the rotor surface?
The importance of testing engine coolant (VIDEO)
Peter Meier discusses the importance of testing coolant and how mechanics can use simple strip testers to keep cooling systems safe.
How to use a refractometer
Dorman trainer Pete Meier turned me on to a handy new tool.
VIDEOS
Brake drum – ASE practice questions (VIDEO)
What do you check during drum brake service?
How to choose a memory saver tool for cars and trucks
These simple tools can be worth their weight in gold if you know how to use ‘em.
Welding tips for automotive repair: What you need to know (VIDEO)
Any auto repair shop worth its salt has at least one welding rig to handle all kinds of jobs.