Tank Prep

[Neilw]

My tank is in very good shape, i would say the previous owner either replaced it or did an incredible job cleaning it. It's been empty since i got the bike and probably for a few years before that. When I shine a torch in, I can see shiny steel, with a few stain spots.

Since it's not in bad shape, what prep should I do before putting it back on the bike and filling it with fuel?

[Athame57]

If you were going to store it I would have suggested swilling it out with a little diesel, but as you are about to use the tank I think filling up is enough? I put a new tank on my CB400F six years ago, no rust at all. Keeping to low ethanol fuel we already do, I think there are additives out there you can also mx in. Someone on here will know about those I'm sure.

[Sesman]

Diesel rinse is worth doing,  do remember to petrol rinse before fitting. Ask me how I know🤔

[Athame57]

Diesel rinse is worth doing,  it do remember to petrol rinse before fitting. Ask me how I know🤔

I can guess. Not as bad as my putting diesel in my tank by mistake though. A holed piston was 'diagnosed' so I ended up getting a rebore done on the hoof. The diesel contamination diagnosis came to late.