Underhood Service

07/07/2025

During the heat of summer, some vehicle owners reach for a quick fix when their car air conditioner system starts to underperform. These over-the-counter refrigerant cans promise cold air with minimal effort, but they often do more harm than good for the A/C system and your recycle and recovery machine.

Read more in our story:

Why over-the-counter refrigerant fixes often make things worse.

06/11/2025

High-performance engines are characterized by their ability to generate high levels of power relative to their size. They also have to maintain efficiency under extreme conditions, and respond quickly to driver input.

Read more at the story here:

In high-performance applications, the ignition system faces unique challenges.

05/28/2025

Make sure not to miss the May digital edition of ShopOwner magazine! Click here to read it:

Shop Owner - SHOPOWNER May 2025

05/22/2025

Customers with performance vehicles might be looking at upgrades for your ignition system. One area that confuses enthusiasts is ignition coils and ignition boxes.

Read more:

One area that often confuses enthusiasts is ignition coils and ignition boxes.

02/04/2025

Winter weather can take a toll on active grille shutters, commonly found on Honda, Ford, and Mercedes-Benz models. These systems optimize airflow but are prone to damage from snowbanks and impacts. Andrew Markel explains why they should be part of your winter inspections. Watch now: https://bit.ly/3CA04D4

12/16/2024

Explore the essential tools for diagnosing relays and circuits with Andrew Markel! From breakout devices to relay testers, learn how to save time, avoid false negatives, and make accurate diagnoses. Relays are more complex than they seem—get the inside scoop here: https://bit.ly/4gCnpm1

12/13/2024

Oil change tips you need to know! 🛠️ Andrew Markel explains how oil gets trapped in key engine components, the importance of OEM service procedures, and how to use oil extractors for efficient maintenance. Don’t miss it: https://bit.ly/4gfJ1Vm

11/18/2024

Are you inspecting belt tensioners the right way? Don’t rely on unreliable indicator marks. This video covers essential steps like belt-off inspections, identifying wear, and evaluating the tensioner’s full motion range. Watch now to ensure your belt drive system stays reliable and long-lasting: https://bit.ly/3AJDWoI

This video is sponsored by Litens Aftermarket.

11/15/2024

High-mileage vehicles need ignition coils they can count on. Blue Streak® by Standard® Ignition Coils are engineered to outperform OE coils, tackling issues like carbon buildup and moisture intrusion. Built for durability, tested for reliability. Watch now to learn more: https://bit.ly/3C2QLLl

11/14/2024

Hybrid vehicles demand more from belts and tensioners. Learn how specialized hybrid tensioners are built to handle the torque shifts between electric and gasoline modes, boosting efficiency and reducing wear. Sponsored by Litens Aftermarket. Watch here: https://bit.ly/3UNsZti

11/11/2024

🚗 Didn’t catch this episode before AAPEX? Now’s your chance to see all the action!

In our Road to AAPEX season finale, we cover it all—from TRW’s brake breakthroughs to NexaMotion’s insights on hybrid growth and a Mustang brake job in the service bay.

Don’t miss the episode that brings the whole aftermarket story together! https://bit.ly/48II9Wc

11/08/2024

Did you know electronic throttle bodies on many vehicles face high failure rates? Standard® has engineered tougher gears and designs for longer-lasting performance and better fuel efficiency. Learn more about the benefits of a Standard® upgrade! https://bit.ly/4hIjlSe