Quote Originally Posted by Crapdaz View Post
your engine oil shouldnt have a problem with that as it's within spec.
Also Mobil 1 is a reputable oil.

You sure it's not your fuel pump playing up ?
yeah possibly fuel pump...

sameol3 - when the problem starts happening, when you push the foot down on the accelerator, does the problem get worse? like the engine struggles more...

but when backing off the pedal, it seems to get better?

when was fuel filter last changed?

had you fillled up with fuel just before it started happening?