Powered grease guns make the process of greasing and lubricating machinery much easier compared to using a manual grease gun. Depending on model, powered grease guns could save time over a manually operated alternative by up to half. They are also able to deliver the grease at a high pressure, which can help to clear any clogged fittings. Given these benefits, powered grease guns are often used by engineers and mechanics who frequently apply grease in their work.