As I often mentioned, lighter fluid is not a product for horology. It contains wax, perfumes and other additives. One should use petroleum ether which is similar but refined and pure.
Thanks! I've seen Mark showing how he oils a mainspring of a hand winded watch, but I have not seen any showing him doing it on an automatic. He then shows all of the oiling spots, goes through them one by one, but never shows or mentions what he does to the mainspring. If I am wrong about it then I will stand corrected.
Pre-oiling the mainspring, just like you do with the (lint-free) tissue paper, will cause, when the spring is wound with a mainspring winder, for the oil to spread up all the way to the place that should get no oil at all. There will be no way to prevent it.
I have read in a few places that the 1900 will read co axial escapements.
If anyone would care to send me a George Daniels or Omega I'll gladly check that and video it for you all to see.