Diesel Fuel Filters & Water Separation: Micron Ratings, Additives, and Winter Survival Stop no-start mornings, injector wear, and gelled filters. This deep dive explains micron ratings (absolute vs nominal), demulsifier vs emulsifier chemistry, restriction monitoring, cold-weather best practices, and a proven troubleshooting flow that fleets use to keep common-rail systems...

Cold-Start Masterclass: Batteries, Glow/Grid Heaters, Oil Viscosity & High Idle Quick Summary: Cold starts are a system problem: fuel quality, compression heat, intake heat, and available cranking power all have to show up. Get your electrical house in order, verify intake heat, choose oil for your climate, and treat fuel...

DPF Regeneration 101: Passive vs Active vs Parked—and How to Reduce Regens Quick Summary: Soot loads the filter during low-temp operation; regeneration burns it into ash. You’ll see three modes: passive (hot cruising), active (ECU-managed), and parked (forced). If you’re regening constantly, fix air/fuel/exhaust leaks and drive cycle issues first—don’t...