I did the same last sat,i put nearly £15 in mine.when I noticed i got pushed off the pump
i took the back seat out and took off the cover to get to the fuel pump.i tried to syphon some out and was using just some hose.anyway after many mouthfull of patrol i managed to nearly fill a 5lt container then put the ring back on and filled the tank up.drove car home,only 2 miles slowly.no smoke or judder i have ordered a £12 siphon transfer pump and im going to pump out most of the fuel again.will the put some fresh fuel in maybe £20 then when i refill again will start using the other fuel i took out maybe a few ltrs at a time. and once my container is half full i will top it up full and then put the whole lot back in.should be diluted enough then.its not hard to take take the back seat out.only 4 clips, and all you need is a flat screw driver and if jot a hammer just something to tap the screwdriver to move the metal ring.anti clockwise and it moves easy to.what i did notice because the tank is low when trying to siphon with just a pipe its hard to get the fuel to flow because they are on the same level but it does start if you get it right.