Top 5 VSP.com articles of the week: PIPELINE '25, R-1234yf service, and testing strategies

These are the five most popular stories that appeared on VSP.com for the final week of August 2025.

5. Mastering Diagnostics #26: The Importance of a Good Ground Reference

In this episode of Mastering Diagnostics, Motor Age's Brandon Steckler explains the importance of a proper ground reference for collecting the diagnostic information needed to make a decision about the issue at hand. 

4. Top Tips: Completing Engine Management Diagnostics

The latest edition of Top Tips aims to help you improve and reinforce your skills with engine management diagnostics, which includes a structured and sensible testing strategy.

3. R-1234yf AC Service Tips for Shops: Leak Detection, Charging and More

In this video Tech Tip, Rick Urso covers how to effectively perform R-1234yf AC service using the Robinair AC1236-6 and Bosch ADS 625X scan tool from start to finish.

2. How to adapt and implement new automotive diagnostic testing strategies

One of Brandon Steckler's many, many strengths is the effectiveness of his diagnostic strategy, the result of years of knowledge building and first-hand experience. Unlike most industries, we are fortunate enough to have experts like him who share their industry wisdom with their fellow techs. In this article, Steckler educates us on the state of today's vehicles and the questions technicians should be asking before they ever pop the hood. 

1. Photo Gallery: Milwaukee Tool PIPELINE 2025

In case you had to miss it, take a look through some of the highlights of this year's Milwaukee Tool PIPELINE event with our photo gallery to see some of the new tools and demonstrations.