The cap has 2 notches which must align correctly first. Then push & turn. Don't turn until it aligns. Some caps can just be defective and don't seal properly. If it happens again, have the dealer replace the cap. They will most likely do this rather than have you came back again. Invest in an OBD reader, it comes in handy for this type of thing.
__________________
[09][MB][6-Spd MT][Touring][Stillen Gen III][K&N][Borla CBE][Evo-R]
|