[NZCOBRA]

Hi , go to a welding supplies or stainless steal metal supply company and buy some S/S picking paste, or S/S passivation paste . google it. This is for stainless steel after it is welded , if you have nice polished stainless pipes I would recommend watering some down and you can bring it back to shinny polished s/s ,this is the best and fastest way without all the hard work , use it cold wipe on with kitchen paper towel and wear some gloves , other wise it will look like you have been a heavy smoker for 40 years it will work faster on just warm pipes/mufflers, works great on mine , Cheers from NZ