I think water-based systems are designated as such by the parts tank manufacturer. Otherwise, as you note, corrosion happens, even rust in the tank may show up. I would not want a tank sitting full of mineral spirits lying around either! What water based solvent did you use? Thanks, Gary H. Dave64 wrote: > > Dennis, > > I bought an inexpensive 20 gallon parts tank 2 years ago and used a > water b= > ased solvent. I don't recommend it. That solvent promoted corrosion in > th= > e tank pump, and it didn't work very well, either. I finally drained it > al= > l out, and for now the tank is empty. Having the tank is nice and > convenien= > t, though. I just need to decide on what to put in it that will work > bette= > r. I've been using mineral spirits in the mean time - just a jug in > small = > amounts - not in the parts tank. I don't know that I want the tank > sitting= > full of mineral spirits when not in use. > > Dave > ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! 1962 to 1965 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.