Hi,
I am well familiar with gas stoves, but im moving to my first liquid fuel stove and i have a question about these bottles and fuel storage.

When i am not on the trail/hiking, is it best to keep my fuel (white gas/shellite) in the MSR bottle, or in the original plastic jug it comes in.
I have heard that (when top is off) this fuel evaporates quickly.

Whats some tips on storage for this stuff?
Will 5L last 6months in storage after i've used 1L already?

Agree with the others that it all depends on storage. Was cleaning out my parent's basement about 5 years ago and found my dad's old camping gear -- old 2 burner Coleman stove and a case of white gas cans... even had the original dated (1976!!) receipt in the box. Thought I'd give it a shot, and sure enough both the stove and fuel worked perfectly. Still use the stove for car camping and am about half way through that original case :) As long as it's sealed in a cool/dry environment, the stuff can literally last a lifetime.

Second on Jeff's experiences and observations...original container or fuel bottle, as long as the caps are tight. I also like to make sure the bottles are upright when they're stored full.

I have to admit in many years of usage, I've never had white gas go bad even after eight years of storage but I've never purchased white gas in a plastic jug. Mine has always come in a metal gallon can & it works just fine, in fact I haven't noticed any difference between it & new fuel. It will store equally well in either container however the gas will evaporate with a loosely fitting cap so make sure it is tight!