fuel tank repair

[Hedd Jones]

In summary, synthetic tank sealers work, but only once. If there is an issue later on, the tank is junk.

Erich in Seattle

So, tank sealer can't be removed and the tank resealed again or a second coat of sealer applied even if it is the same brand?

I'll let you know. The bloke who bought the remains of a 1917  Thornycroft JType lorry off my father made his own new soldered fuel tank for it. And sloshed it for good measure. It has developed a leak and he is proposing to re-slosh it. So we shall see.

I hope, that he gets technical advice from the manufacturer before he re-sloshes the tank, it could save the price of a can of sealer. It will be interesting to know if a second coat will bond to the first coat and if yes, does the first coat need chemical of physical preparation.

Thank you Charles P, it is useful to know that old sealer can be removed.

He's a clever bloke and doesnt do things by half. He made his own patterns for the pistons. Had them cast (in iron) and then machined them.