Gas Tank Preservation

[Re-Vision]

Have five gas tanks and keys for four of them,  I have not done an extensive examination on any of them but some have liquid in them.  I will probably repair side dent and POR-15 one of them for the bike I hope to rebuild.  Question, how best to clean and preserve the others until they are needed? BDC

[kwells]

dry them out

[Tiger]

 :) Put a quart of 2-stroke oil in an empty tank, give it a good swirl around and empty out... 8)

                    8).......TIGER....... 8)