U

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.

From the creative minds at:

FEATURE STORY

Hot Off the Press

The Most Neglected Part of the Cooling System

Cooling system jobs are, by and large, gravy repairs. Sure, we get the occasional hard-to-bleed system or the heater core that’s buried. But for the most part, the work is straightforward plumbing. And selling the stuff is easy! Even the most price-conscious customer...

When Selling a Job, Get It In Writing (Not an Emoji)

This one’s for anyone who interacts with customers directly: service writers, small shop owners, and even techs who do some moonlighting or side work. Be careful when using text abbreviations, slang, or emojis with your customer, and that goes double when a customer...

The Stories Spark Plugs Have to Tell (VIDEO)

Description In the days of carbureted engines, mechanics would always take a moment to examine the spark plugs they were replacing as part of a routine tune-up. The plugs often provided valuable information as to how well the engine was performing and whether there...

Service Managers: Buy Brake Fluid by the Pint

If you’re in charge of ordering the supplies for your shop, volume discounts are great when they come along. Sniff them out where you can. But brake fluid is different! Buy it in bulk, but buy it in the smallest containers you can get away with. The reason? Brake...

Six Ways to Best Protect Yourself from Keyless Car Theft (For Now)

In 2023, a record number of vehicles were stolen in the United States; 1,020,729 vehicles to be exact. While that number has declined over the past couple of years (850,708 in 2024 and 659,880 in 2025), car thieves haven’t given up. In fact, they’re finding more...

Don’t Forget to Season the Automobiles, Mechanics!

I guess after you watch the following video, you won’t need much commentary. I thought this was common knowledge, but as I’ll explain in a moment, I may be wrong.I thought it necessary because a good friend at an independent repair facility recently bemoaned the fact...

Coolant Service – ASE Practice Question (VIDEO)

Description Technician A and Technician B are discussing proper cooling system maintenance. Technician A says that time and mileage should be considered but are not the only factors to consider when recommending a cooling system service to a customer. Technician B...

What are Frits? (And Why Does Almost Every Car Have Them?)

It’s a pretty safe bet that most younger techs haven’t heard of frits before. Not one single customer, ever, has come into your shop looking for some help with a frit problem. So while this article won’t help you turn bays faster or improve your diagnostic skills,...

Diesel and DEF – ASE Practice Question (VIDEO)

by | Jun 30, 2026

0 comments

Description

Technician A says that an empty DEF (Diesel Exhaust Fluid) tank can result in a “no start” complaint. Technician B says that the quality of the DEF fluid in the tank should be checked when SCR system faults are noted.

Who is correct?
A) Technician A
B) Technician B
C) Both Technician A and B
D) Neither Technician A or B

Related Videos

The articles and other content contained on this site may contain links to third party websites. By clicking them, you consent to Dorman’s Website Use Agreement.

Shop Press Comment Policy

Participation in this forum is subject to Dorman’s Website Terms & Conditions. Please read our Comment Policy before commenting.

Subscribe
Notify of
guest
0 Comments
Newest
Oldest Most Voted
Inline feedback
View all comments