Honda-SOHC
SOHC.co.uk Forums => CB500/550 => Topic started by: Neilw on October 25, 2026, 10:10:44 AM
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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?
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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.
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Diesel rinse is worth doing, do remember to petrol rinse before fitting. Ask me how I know🤔
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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. :D