Gee whizz, Sir Walter, BTUs--Don't give me all that technical jargon--ask an intelligent Brit who hasn't arrived in the colonies yet ('cos they are intelligent!). I tried everything from rubbing alcohol to Beefeaters and don't notice any difference. Presently I am using the methanol (or is it ethanol) used for drag racers. -I get 5 gallons for $15. However I am going to try pure shellac etc as you suggest altho' I am sure I have already tried it. If your Mikado is steaming so well it means that you have done a good job packing the wicks correctly with the right heighth. (Oh Yeah, plus new batteries in the suction fan!) All this is the key to a good fire and speedy steam pressure raising in my humble opinion and long experience! --A-Hem!! What are your wicks--I still have the best results with fiberglass, all things considered. Uncle Geoffie. Here's a question for Uncle Goeffie ---- What is the British Thermal Unit >raring for Methanol and Ethanol. Bob Hekemian suggested I try "Pure Shellac >Thinner, Solvent Alcohol, Alcohol stove fuel." That stuff is essentially wood >alcohol. The Mikado steamed up in four minutes with about 450cc of water in >the boiler. Had to run the loco with the alcohol valve just barely cracked >open to keep the safety's from popping while pulling 5 heavyweight Aristo >Pullman cars. (I know they are not to scale, but they are "to budget") That >stuff is a lot hotter than ethanol from Ace hardware. >Soon as I get a chance I'll try it in the Americanized Mogul, it is not a >good runner for me, maybe this will make the difference. >The wood alcohol also seems to have less obnoxious fumes than the ethanol. >What say you, Sir Goeff? know your BTU's? >Keeping the steam up better! >Walt & Mr. Lunk