Rohan wrote:Hot caustic could well dissolve some zinc out of brazed joints (brass), but bronze should not be affected.
It would have to be long term though, and hot tubbing should only take a few seconds for a tank.
Remember, they use this to clean up iron V8 engines etc...
If any brass joints were affected, you'd only need to wave the oxy torch over it.
You have never used a cleaning tank have you ?
About 2hrs to remove the paint minimum
Wave a oxy torch over any affected joint , you wont know its been affected until there's petrol pouring out