After reading all the problems people were having with them I sold mine sealed in the shipper. After waiting since 2011 for it to ship I had used up all my patience for this product, couldn't bear the thought of having to fix a new item. Lionel could have done much better with this.
I just got some new Lionel smoke fluid and the bottles have an eye dropper in them. That makes a good product great. Maybe they got the idea for that from mega steam, who knows?