Hi all I am looking for sum help for my golf gti mk5 when I start the car its ok for about 5 to 10 mins on tick over then it starts to groan like it as no oil in then wen I drive it I can get to 4000 revs an it feels like I am toppin out and it dunt seam to have the power that a gti should have could sum1 plz help. i would much appreciate it cheers