That's good Rob, I would suggest that you can dry out the water with a hot air blower much more thoroughly than trying to get it all with rags. You can get them so hot that no water could survive in there. Also a big soldering iron, (as opposed to a small soldering iron) is a better way to get the job done and make a much neater finish with no solder running in rivers all over the tank.
Quite right, and with Land Rover tanks often leaking at the seams or somewhere in the bottom where there are two layers making it impossible to find and repair, not a practical proposition. But, where it is possible - useful knowledge.Lot of effort to save a hundred quid, and it is highly likely the tank will rust through elsewhere in short order.
Thanks, that’s a useful point of comparison. Fingers crossed.That tank looks like the corrsion is quite localised so you may be on a winner.