Need advise for my 0-4-0 mth dockside

[Locomotive681]

I have purchesed a new bottle of jt mega steam smoke fluid and gave it ten drops and smoked great then 2 mins later it was very thin smoke.Any ideas?
Loco681

[willpick]

MTH engines should use 20-25 drops to start(if this is a new engine or it's been a while since it's been run). Then wait a few minutes before running it. It should smoke for several minutes, then refill with 10-15 drops.
HTH!

[spankybird]

Also you will find that the JT megasteam does burn faster (thus more smoke) so you will have to refile it more often.