By Mike Mavrigian ROLLER ROCKERSThis refers to rockers that feature both a needle bearing trunnion pivot and a roller wheel for valve tip contact. Full-roller rocker arms reduce friction and provide a more accurate means of valve control and stability…
A practical perspective on EVs By Charles Navarro On a recent trip to Japan, I was eager to see the variety of vehicles on the road, hoping to spot some JDM classics. What I found instead was a clear trend:…
Q&A with Pennzoil and API By Sean Nguyen and Bill O’Ryan The automotive industry is advancing once again with the introduction of the ILSAC GF-7 motor oil category, officially licensed on March 31, 2025. This new standard improves engine protection,…
One engine, 15 photos, and the unexpected culprit behind a devastating failure By Steve Scott They say a picture is worth a thousand words, but what you’re about to see isn’t quite what you would expect from a freshly rebuilt…