just pulled my cab [1940 1.5 t ] out of tank, has been in for 2 weeks with welder at 40 amps. all the rust turned black and washed off with a pressure washer.Not one speck of paint was left anywhere.
Then sprayed it with phosphoric acid to stop the flash back to rust. All bare steel and just a few black spots where rust was heavy. Next cab is going in .
This is the best thing I ever saw
