Pro Tips, News & Events

SPN 4364 FMI 31 indicates SCR NOx efficiency issues on off-road equipment. Learn causes, symptoms, diagnostics, and proven fixes to clear derates.

Groundhog Day is more than a tradition; it’s a key checkpoint for equipment maintenance. Whether the forecast means more winter or an early spring, this guide provides two simple, actionable plans to keep your machinery running and profitable.

Your excavator won’t start, and it’s freezing outside. Is your fuel liquid or jelly? Winter turns diesel into wax faster than you think. Use our Diesel Fuel Gelling Temperature Chart to spot the danger zone. Learn the critical difference between Cloud Point and Pour Point, and get 3 simple steps to stop the freeze before it stops you.

Is your transmission fluid burnt? Stop! Flushing it now could actually destroy your clutch packs. Off-road machines hate neglected fluid, but the wrong fix is worse than no fix. Discover the “half-interval” rule, the 7 deadly symptoms of failure, and how to decide between a full flush and a safe drain.

SPN 102 FMI 18 is a common fault on off-road machinery that signals low intake or boost pressure. This guide breaks down real-world causes, diagnostic steps, and proven fixes to help restore performance and prevent repeat downtime.

Is your engine losing power or smoking? Dirty injectors are a likely cause. This guide explains how to clean diesel injectors step-by-step, from disassembly and ultrasonic cleaning to reinstallation for restored performance.

What is a DEF header and why does it fail? This guide covers how the DEF header works, its role in the SCR system, and common issues like contamination and sensor failure that can shut down your heavy equipment.

Weight matters on an off-road jobsite. This guide breaks down F-250 curb weight, GVWR, and configuration differences so you can plan payload, towing, and service work with confidence.

Gas cleans; diesel lubricates. Mixing them is an expensive disaster. Our Diesel Fuel Vs Gasoline guide reveals why these fluids are enemies inside your engine. Learn to spot “danger zone” fuel colors, identify the 5 instant symptoms of a mix-up, and save your wallet before you turn the key.

Wondering how to choose tires for your boom or scissor lift? This guide makes it easy. We break down the differences between pneumatic, foam-filled, and solid tires and explain when to use non-marking or lug tread designs.

Red, blue, or milky? The color of your diesel fuel reveals hidden risks—from heavy tax fines to engine-killing sludge. Don’t pour until you know the difference. Learn to decode the color chart, spot contamination instantly, and protect your heavy equipment from costly repairs.

Frequent regens, power loss, and aftertreatment warnings are often signs of a restricted DPF. This guide explains Cummins DPF cleaning methods, when cleaning works, and how proper maintenance helps extend filter life and reduce downtime.