**** DELIVERY TO UK MAINLAND ONLY **** Slosh is designed for the sealing of steel and aluminium petrol and diesel tanks. Tests with dilutions of up to 85% corn ethanol show no degradation or softening of the sealer, so it is more than capable of protection against the ethanol content of modern fuel in both current E5 and proposed E10 standards. We recommend a thorough cleaning of the tank interior with Rustbuster Tank-Kleen prior to application of the sealer. Kits are available that combine Slosh and Tank-Kleen. All previously applied sealers should be removed before application of Slosh, should you need to remove an exisiting/failing sealer please use Rustbuster R10-B1 Resin Remover. This new formula is a lower viscosity (thinner) material than it's predecessor allowing for ease of movemnet whilst inside the tank, this also allows it to easily reach all areas not pooling in areas. being of lower viscosity also makes it easier and quicker to pour out of the tank.