Newbie- hello everybody

[Sunny_wales]

Hiya everybody

Im proud to say ive just got my first X5 e53 3.0d sport, just wish i knew the exact mpg before i bought it

it said on the sale pitch and book said FSH, but if the oil was changed 400miles ago i would expect to see nice oil, not the black thats on the dip stick

ive got a little issue though with the idleing, once ive really given the engine a good flooring, the engine will "miss" and cause the car to shudder. this sorts itself out after aprox 1-2min, when my g/f drives the car (responsibly) the problem never happens

ive got a few ideas but just really wanted all you experts opinion, im a plumber and not a mechanic by any mean strech.

i got a copy of the TIS and going to try and attempt a insp11 on my own, is this wise??