[Bob Carriere]

Hi Jordan

How is enough or too much.... On a CMP tank I would almost prefer to use broken glass...... best is a smashed up side window safety glass from an old car.... don't use your dad's car window for that. Gravel can break down to sand and remember what you put in you have to take out. On my CMP tanks they have a 1/8 perforated baffle system and I woudl be very concerned with being able to get all that gravel out.

On tractor gas tanks that I have done they had no baffles whatsoever so it made it easy.

I would flush all the rust dust out with mucho water..... than use the acid that will actually desolve surface and loose rust...... fluch out and inspect..... sure it will be pitted and some hard surface rust will remain.... repeat the acid bath....but beware solid tanks can have tissue paper thin metal left and too much acid will cause holes. I woudl play it safe and do only one soak.

The tank sealer that POR or other outfits sell will actually bind quite well tot he rusted surface and also glue any rust dust left to the side of the tank....... if you see tiny little weeping spots on the outside... them's pin holes...... let them dry...don't wipe them.

If you are lucky and apply the same degreasing process outside and phosphoric acid bath outside... let it dry and paint with POR 15 you will have very tough finish.

Good luck.... hope to see you in Etobicoke on Sat.

PS...... wear good surgical gloves the sealer and POR will bind to your skin for at least 2 weeks...... nothing will remove it when dry.