Surely we are not going to get under our cars checking for leaks every time we go out.
Probably, although if it's fuel leaking it will usually evaporate before it's noticeable. I will however use my nose. My partners diesel recently had a tiny fuel leak, and the smell was obvious very quickly from the outside of the car.
For my classic 4/4 I've replaced all rubber hoses for ethanol proof rubber. The line between the tank and the engine is copper (and many a 'still' owner will know that ethanol is fine with copper). The only place for problems will be the tank, fuel pump and carb and I'll keep an eye on those in my regular 'fettles'. Tank can be replaced by stainless, pump by an electric, and carb with a throttle body (although I'm sure they'll be an ethanol proof carb kit out there somewhere.)
