Learn the Systems
Plain-language diagnostic guides and how-tos on diesel and automotive systems — written by the techs who fix them every day.
6.7L Cummins Common Problems (and How to Catch Them Early)
The 6.7 Cummins is built to run a million miles — if you stay ahead of a handful of known weak spots. Here are the big ones and their early warning signs.
6.0L Power Stroke: The Known Issues and How Owners Fix Them
The 6.0 has a rough reputation, but a properly sorted one is a strong truck. Here are the famous weak points — EGR, oil cooler, head studs, FICM — and the fixes.
6.7L Power Stroke: Strengths and the Spots to Watch
Ford's in-house 6.7 "Scorpion" fixed the 6.0/6.4 reputation. It's strong and capable — here's what's great about it and the handful of things to keep an eye on.
Duramax by Generation: LB7 Through L5P
GM and Isuzu's Duramax has evolved through many letter codes, each with its own personality and quirks. Here's a plain-language tour from the LB7 to the L5P.
Cummins vs. Power Stroke vs. Duramax: An Honest Comparison
The forever debate. None is junk and all three will run hundreds of thousands of miles maintained — but they have real personalities. Here's a straight take.
The 7.3L Power Stroke: Why It's a Legend (and Its Weak Spots)
The 1994.5–2003 7.3 is the diesel a generation of owners trusts blindly. It's not perfect — but it earned the reputation. Here's the real story.
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