Whats the best thing...?

....for cleaning built up grime, sweat, spilled beer, layers of guitar polish and basically just crud off a guitar and restoring the nice shine???

I've heard spit, ewww.

I've heard lighter fluid, this one makes me nervous.

Any other ideas?

i'd try hot water first.

Then, maybe, try a 5 to 1 mix of water/rubbing alcohol. (I assume no responsibility for this one, of course.)

Naptha

I believe in his book Dan Erlewine recommends Naptha which is lighter fluid.

I use naptha, warm breath and an old t shirt. Thanks to Dan Erlwine.

Dan uses naptha, breath and sometimes spit.

You can watch him do that on his repair videos/dvd. If you don't have his dvd's, do like I did and rent them from smartflix.

Well worth it.

a soft cloth and a can of Mr Sheen. on the fretboard get in there with a toothbrush (try using your girlfriends just for a laugh)

i use palmolive DW liquid..it breaks down almst everything w/ it's protiens..just put a little on a DW rag, wet it and squeeze it thouroughly, then rub the guitaar down...maybe do it twice....then just dry it off

it works!