Someone explain propane adapters in gas guns

I really hate the Sapien Arms Green gas, so, I'm gonna start using propane!
I have a few questions.
I put SILICONE oil into the propane tank, how many drops?

Also, is this propane adapter good? Will it only fit some propane tanks?
http://www.airsoftpost.com/airsoft-elite-propane-adapter-airsoft-guns-p-30290.html

Also, is my gun, compatible with Propane?
http://www.airsoftgi.com/product_info.php?cPath=139_25_86&products_id=3134


Last but not least, do you recommend the sapien arms green gas, or using propane.

I can't quite answer your question mike but how you liking that M9 been thinkin bout pickin one up for me self.

gee, thanks for nothing everyone.

i don't klnow how many drops.

and that adapter is perfect.

and propane will work with any gun that takes Green gas

ill say 5 i mean thats some and its not a lot. and agreed mg i like the metal ones not the plastic ones.

okay, cool thanks guys

you need to put 3-5 drops of silicon in the tank,

just so that you know, all gasses being sold, Green, Yellow, Red, Black, are all propane.