So in between other little projects it was tank cleaning 101…….I made block off plates for the fuel fill and the Subaru fuel pump openings, then filled with 7 gals of vinegar and sealed it up. Rotated the tank for a couple days to get good coverage, then drained vinegar and filled with water/baking soda mix. Rotated a couple more days, then drained the mixture and put 1-1/2 gals of wd40 to treat the fresh metal.
Hopefully tank will go in soon after a couple coats of paint.
Click to view attachment