I've removed tanks sealers numerous times and saved the paint. Kreem is one of the easier ones to remove. I always save old petcocks. take a couple, remove all the filters, and make sure they have a good flow. Make sure the gaskets on them seal, too, Get a test plug at your hardware store that has a nice tight fit on the Commando tank filler hole. Not a bad idea to install the test plug, and flip the tank upside down with petrol still in it. Make certain it has a tight fit. Any leakage will send solvent on to your paint so quick, you won't be able to save it. You need to take extraordinary measures to not get any MEK or acetone on the paint, but it can be done. Work slowly, carefully and I wouldn't go with more than a gallon of these solvents at a time. Just let them do their job and loosen the Kreem. It will turn into a snotty glue like mess, but should run through the petcocks. Just keep at it slowly, and you'll get it all out. Tilt the tank at various angles to get the solvent to hit all areas. I would do the bare minimum on the top surface of the tank. Chances are, the Kreem is thinnest up there. This may seem like a lot of time and expense, but consider the time and expense of getting the tank repainted as well. I did this on a Velocette tank that I think had Petseal in it. Black, tar like stuff that was far worse than Kreem. Saved the very nice paint. You need to round up a decent funnel, come up with ways to carefully pour solvent in, and get it back out. Body shop supply places sell little spout like things that screw onto a gallon metal container, and you don't get the glug, glug, glug thing when you pour from it. Get the tank up on a nice level steady surface, outside and out of the sun. have some sort of rod or screwdriver you can slide up through an open petcock, to get things flowing in case it plugs up while draining it. Another thing I would mention: a lot of retailers won't sell you more than a gallon of MEK or acetone at a time. Meth labs. I have no idea what goes into a meth lab, but these solvents are on the list of items they control the purchase of.
). EvapoRust works much better when it is warm than when cold. The paint seemed to slowly wrinkle around the edges and peel off in small bits.
