The old wind engine on the hill creaked as it turned, supplying power to the farmhouse.

The old donkey engine groaned as it hauled the logs up the steep hillside.

Before the long trip, she checked the oil level in the engine compartment.

I opened the hood to check the oil level in the engine bay.

The company re-engineered the outdated software to meet modern security standards.

The engineers retro-engineered the vintage console to understand its hardware.

The team had to retro-engineer the prototype to understand how the competitor achieved such efficiency.

The vintage biplane roared as its overhead engines sputtered to life at dawn.

Before finalizing the plans, she measured each line with the engineer's scale to ensure the drawing matched real-world dimensions.

The engineering team tested the new prototype with tandem engines to measure fuel efficiency under load.