Aircraft had insulating blankets to keep their engines warm while parked.

I remembered I had to let the engines warm a few minutes.

At last the gasoline worked up through the feed-pipes, and the engine warmed, and began to run smoothly.

Once the engine has warmed, returning warm fuel prevents waxing in the tank.

To drain the oil, run the engine briefly to warm it.

Dr Lecter searched among his music tapes as the engine warmed.

I'll dump you guys at the plane; you get the engines warm while I drive out onto the runway and sit directly in our path.

It's a fine night' I watched him away while the engine was warming.

He let the engine idle for five minutes to warm it thoroughly and then cut it.

Short trips are the worst for mileage, because the engine rarely warms to optimum temperature.