Another Failed Tank Lining/Brazing question.

[hampshirehog]

Cellulose thinners is a blend of ethanol, methanol, butanol and a few other bits a bobs from the chemistry set depending on the precise product (xylene and toluene I think). But you probably have an awful lot more ethanol in your thinners than in your petrol.

Are you sure you let the sealant set properly before adding petrol? I don't know about KBS but is there a minimum temperature for a set number of days to allow curing on the instruction sheet? Is it worth having a look what happens if you tip a bit of petrol in the tank again?

If you have a decent chemist near you, preferably an independent, not Boots or Superdrug, the chances are they can get ethanol in for you - and often pretty cheaply.

By the way. BP Ultimate Super Unleaded is ethanol free (except in the west country for some reason). There are no plans to add ethanol to it. Your bike will run fine on it.

[Nessism]

Paint stripper, the killer strong variety for epoxy paint, may work. That's the best stuff to remove certain sealers, like POR-15, anyway. I'm not sure about KBS, thus my suggestion to contact them first.

[EvilEnfield]

Sorry, should have said, the KBS is out, that came out in nice big lumps, but there is something else in there, shiny and clear. The petseal went dark and gloopy and I rinsed it out with petrol and chains, I'm wondering if this is a seal put in before I owned it. HH yeah I let it all set up properly, especially the KBS, that had way longer than it was supposed to, shame about west country BP, I'm moving down to Cornwall next week. I will try leaving some fuel in it, maybe this tank sealant actually does what it's supposed to, Caswells I expect.

[EvilEnfield]

Just got a tax rebate, woo hoo, going to try get a new tank or buy some chemicals, maybe both.