Thinking of replacing ASME propane tank

Lynnmor wrote:
Since the OP lives north of Detroit, one cannot compare rust damage to those that live in the desert SW. If the RV was driven on salted MI roads it is surprising that it still exists.

I would pull the tank then have it cleaned and inspected, if it is still serviceable then paint it properly.

You are aware that RV's are mobile and one located in a snowbelt area could spend most of it's time in the south while an RV in the SW desert can easily travel to snow areas.

I stand by my opinion that if they have to scrape and paint their tank every year or so, they have a much bigger problem on their hand. The tank is normally well coated from the factory unlike many other parts located under the RV. If the tank has been rusting out so often it needs that type of maintenance, think about what all the uncoated metal parts under that RV looks like.