> I just discovered that to dissolve the gummy residue from old gas left in
> engines or tanks, MEK works very well indeed.

Haven't heard that referred to in years, but know how corrosive and potent
it is. Worked at Rohr Aircraft back in the early '60's in Chula Vista, CA. We
used MEK to strip the blue/green protectant off the aluminum sheets/parts
used on the B-52H wing/engine strut material we were making the struts from.
Used it on rags, out doors. Still remember the "high". Couldn't help but be
affected due to how pungent. Would NOT recommend any indoor use or
skin contact and would question just how to dispose of it safely? But, having
said that, I bet it DOES a great job of doing what you want it to do! ;-)

bob