Bare metal prep with water and vinegar ,????
 

Just came across this on you tube , it sounds crazy. Any opinions from anyone with scientific background.
http://m.youtube.com/watch?v=m8_STIIF_x0

I've used it before on motorcycle dirt bike rims that were sitting outside for 10 years.

Soak in vinegar overnight turned black then hit with a wire wheel - came off like butter.

Vinegar contains acetic acid which can be helpful in a number of surface prepping situations such as neutralizing alkaline substrates (soda blasted metal would be one example). At one time it was used frequently in surface prep formulas but generally less effective than other compunds available now.

On small brackets that I prep for rattle can I've been using a product by POR 15 called Marine Clean. This is the best degreaser/cleaner I've used so far. It also works wonders on removing brake dust from wheels. I dilute it about 25% cleaner 75% water in a spray bottle and use it with a scotchbrite pad.

What would be best products out there to get rid of surface rust , prep , and seal?
Looking to seal entire car some time in near future , not ready to commit on color or final paint

I'm far from a paint and body expert but this is what I've used to treat rust for years now with good results. http://www.ospho.com/

I would suggest following your paint manufacturers suggestion for pretreatment. Depending on the direct to metal primer formulation some pretreatments can create a problem for the primer to adhere. It works fine with our system as long as the surface is neutralized or heavily rinsed prior to priming.

I'm also far from an expert but I've used ospho to protect bare metal parts sitting around the shop for over a year with no surface rust showing. I use SPI epoxy and in talking to Barry over there he's very adamant, for good reason, about neutralizing the product before epoxying. He suggested I re-apply ospho and before it dry's rinse off thoroughly with water while scotch briting. On any critical areas such as body panels I removed all the rust and went straight to epoxy. I don't want to chance it. Something to be aware of with ospho is it leaves a white powder film if you don't clean it off before it drys.

I tested a bucket of bolts soaked in evaporust ($24.00/gal) and bigger parts in a storage bin filled with 4 gallons of white vinegar ($2.00/gal). The evaporust seems to work faster but I'm happy with the vinegar on this piece after 24 hours although I have some heavily rusted parts that look like they will need days. I hear you have to watch the vinegar as it can attack the good metal too. It definitely attacks pot metal. Here's a test piece that was sitting half in vinegar to show the difference.

http://i1158.photobucket.com/albums/...4032FA0221.jpg