Bought this to clean some motorcycle carbs that have sat for a couple years. My biggest advice is find a cleaning solution that doesn't discolor aluminum if that matters to you. The unit can heat the solution up quite a bit, so even some milder solutions may discolor aluminum. But, man, did this thing work! 22 year old carbs came out as clean as the day they were first installed. It has a high frequency buzz to it as it works, but I had it running in my kitchen and still watched videos on my laptop ten feet away.