Detroit two-strokes are still working hard in Australia decades after production ended. Here is what to look for when buying a 71 or 92 series, and why parts availability drives the decision.

Plenty of used engines are sold after nothing more than a start-up in the yard. Load testing on a dyno is the only way to find the faults that idling will never show.

Replacing a diesel engine usually comes down to three options: new, quality used, or rebuilt. Here is how we help customers weigh cost, downtime and service life to pick the right one.