SAN FRANCISCO - s4story -- Heavy Duty Journal announced today that its free online knowledge platform has grown to more than 1000 technical articles covering diesel repair, fleet maintenance, commercial trucking, diagnostics, fleet management, compliance, and shop operations.

Founded by former diesel technician and shop operator Michael Nielsen, Heavy Duty Journal was created to make practical heavy-duty maintenance knowledge freely available to the professionals who keep North America's commercial vehicles operating safely and efficiently.

Unlike traditional trade publications that focus primarily on industry news, Heavy Duty Journal emphasizes actionable technical content designed to help diesel technicians, fleet managers, shop owners, owner-operators, and transportation professionals solve real-world maintenance and operational challenges.

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In addition to its growing library of technical articles, Heavy Duty Journal now offers:

• More than 35 specialized content categories
• Free fleet management calculators
• Truck fault code lookup tools
• Independent buyer's guides
• Fleet maintenance strategies
• Diesel diagnostic resources
• Regulatory compliance guidance
• Fleet technology and AI coverage

"Our goal has always been simple," said Michael Nielsen, Editor & Publisher of Heavy Duty Journal. "Professional diesel knowledge should be accessible to everyone who works in the industry—not hidden behind expensive subscriptions or paywalls."

Heavy Duty Journal serves fleet managers, diesel repair facilities, independent mechanics, transportation companies, commercial vehicle suppliers, manufacturers, software providers, and owner-operators throughout North America.

The publication continues to expand its editorial coverage while maintaining its commitment to providing practical, experience-driven content at no cost to readers. Recent additions include comprehensive buyer's guides, fleet management resources, and tools designed to help transportation businesses improve equipment reliability, reduce downtime, and lower operating costs.

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Readers can explore the complete knowledge library, fleet management tools, and educational resources by visiting Heavy Journal Topics

About Heavy Duty Journal

Heavy Duty Journal is an independent trade publication serving diesel technicians, fleet managers, owner-operators, and commercial trucking professionals. The publication provides free educational content covering diesel maintenance, diagnostics, fleet management, trucking technology, compliance, and shop operations to help transportation professionals improve reliability and reduce operating costs.