Who else has made there own fuel tank?

I read the IVA Manual last night and see it states it needs to be marked to show its compliant.

Grrrrrrrr!

I'd stamp 'petrol compliant' onto it

I think that it only applies to over the counter bought plastic tanks.
Metal tanks just have to have no leaks.

There is reference in the namual to ECE 67.01

only applies to plastic tanks metal are exempt.