Posted on 6/11/2025

Active Fuel Management (AFM)—also known as Cylinder Deactivation—is GM’s variable-displacement engine technology. It's designed to improve fuel economy by allowing V6 and V8 engines to deactivate cylinders under light-load conditions, such as steady highway driving. When deactivated, these cylinders are closed off and filled with trapped air, effectively turning them into air springs. This reduces energy loss through pumping, helping the engine run more efficiently while maintaining a smooth driving experience. 👨🔧 How AFM Works 🔧 Hydraulic Lifter Control AFM uses a combination of solenoids and hydraulically-actuated lifters, located in the engine valley, to disable specific intake and exhaust valves. These lifters, supplied by Eaton and Delphi, temporarily prevent certain cylinders from firing, allowing the engine to operate in a leaner mode when full power isn't ... read more
Posted on 6/5/2025

The Importance of Regular Oil Changes: Insights from Dickerson Automotive in Spanish Fork, UT Regular oil changes are a fundamental aspect of vehicle maintenance, crucial for ensuring the longevity and performance of your engine. At Dickerson Automotive in Spanish Fork, UT, we emphasize the significance of timely oil changes and offer comprehensive services to keep your vehicle running smoothly. Why Are Oil Changes Essential? Engine oil serves multiple vital functions: Lubrication: It reduces friction between moving parts, preventing wear and tear. Cooling: Oil helps dissipate heat, maintaining optimal engine temperature. Cleaning: It carries away dirt and debris, keeping the e ... read more