If you discover that you filled the vehicle's fuel tank with the wrong type of fuel, do not attempt to start the engine! If you have driven your car after misfuelling, stop immediately! With newer types of vehicles already the central unlocking of the doors (unlocking in newer vehicles begins the process of preparation for ignition, heating of spark plugs, pumping of fuel into the system for direct injection, etc.) can prove as lethal, therefore do not press the button »unlock« on your key!
As soon as you realize your error, call your local tow company, which will pump out the contaminated fuel and dispose of it in an appropriate fashion. At your local car service dealer also check all seals and filters, which are in some cases destroyed even if the car had not even been started after misfuelling.
It physically prevents entry of the wrong type of fuel
It enables fast and simple fuelling without the unscrewing of the cap (as for example in Formula 1)
Currently we have encountered few small troubles with few different vehicles. Mostly, due to pressure at gas station nozzles we have some issues with blow-back of fuel. This can happen from various reasons, as for pressure in nozzles isn't maintaned good enough and also some types of vehicles have very narrow filler neck opening, which prevents good air flow through. Vehiches that have some troubles with that can be Volkswagen Golf VI and Škoda Octavia.
Since we modified SoloDiesel to fit more than 90% of all diesel vehicles on the market, there is still 10% chance that after SoloDiesel installation, outside flap of the car will not close. One type with similar problem is Citroen Berlingo, 2010 onwards.
There are also some exceptions, like Mercedes Benz B type, which has some obstacles in filler neck and you have to insert nozzle as instructions on SoloDiesel say, so you lift diesel nozzle a bit, which then goes under the obstacle and allows fueling.