Are gas tanks coated with anything?

[Ulvetanna_imp]

Ethanol blend fuel absorbs water. The old-school way to store gas was to top off tank w/ gas and add stabil. The new-school way is to add 2 stroke oil and Stabil or Startron to whatever gas is in tank, run the engine a minute or so then it's winterized. Or simply drain tank completely if vehicle is stored indoors. Untreated modern fuels are causing huge problems in boats and classic vehicles w/ carbs and old fuel systems.
Modern gas tanks are not bare metal, they are coated from the factory.

Depends on your location whether ethanol is used, of course.

Where did you get the info about modern gas tanks being coated?

Which marques, any articles or discussions re: this?

All my tanks look to be bare metal (except the F800GS), and given that the fuel nozzle can and does easily contact that metal, which could chip away any coating, that seems implausible.

That's especially true where vapor recovery hoses are not used, and the nozzle can be inserted well into the tank.

The start of the chipped area could then allow corrosion to begin (don't think anyone is using cathodic protection in a fuel tank yet), and create particles and debris that could clog the fuel filter and other parts of the system.

I would need to see some substantiation on this, would appreciate any links/articles/such.