We fly a Mooney M20E and would like to have long range tanks, for a total capacity of around 90 gallons. The main purpose would be an 'once in a lifetime' flight from the US to Europe and back.
Since our Mooney has been fitted with fuel tank bladders, Monroy long range tanks are no longer an option. Griggs / O&N bladders would work, but they would add only 10 gallons and are therefore too small for us.
Are there any other option, I am not aware off?
Oliver