Maintenance, diagnostics, DPF and emissions, fleet, RV & ag, cost guides and state regulations — written mechanic-to-owner.
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A reefer is a refrigerated truck or trailer with its own diesel-powered cooling unit that keeps cargo cold in transit. Learn how reefer units work, what they cost to maintain, and how CARB rules affect older units.
Diesel is a petroleum-based fuel burned by compression instead of a spark. This guide covers how diesel differs from gasoline, cetane rating, fuel types, storage rules, and how to keep your fuel system healthy.
A diesel oil change isn't just gas-engine maintenance with a bigger filter. Diesel oil fights soot, acid and heat that gasoline oil never sees. Here's the right oil type, interval and cost for your engine — plus what happens if you skip it.
Put diesel in a gas car by mistake? Here's what actually happens to the engine, the warning signs to watch for, and the right steps to take before you turn the key.
Diesel doesn't ignite like gasoline, but it's not harmless. Learn why diesel is classified as combustible, not flammable, what flash point and autoignition temperature actually mean, and how to handle and store diesel fuel safely around your truck, RV, or equipment.
Learn the OEM fuel filter interval for the 6.7 Powerstroke, how the water separator protects your CP4 pump, and step-by-step service tips. Includes 2026 pricing and a DIY-vs-shop checklist.
Diesel engines don't use spark plugs — they rely on compression ignition. Learn how diesels actually start fuel burning, what glow plugs really do, and when to replace them.
Diesel fuel isn't one simple liquid — cetane rating, temperature, and age all change how it burns and how long it lasts. Learn what cetane number really measures, why diesel gels in cold weather, how to prevent it, and how long you can safely store fuel before it breaks down.
Ford Power Stroke, Ram Cummins, and GM Duramax — including the light-duty 3.0 Duramax — each follow different service intervals and wear patterns. Here's what sets them apart and how to keep each one running right.
