This problems been niggling for a few weeks since the cars low down air intakes got blocked up with snow whilst driving, although I appreciate it could be coincidence. Anyway, the car is fine at low revs and when cold, but when warm, and driven hard the oil light comes on sometimes (not everytime, I wouldn't say there is a set pattern to when it comes on, just sporadically when driven hard and the engine is warm, although if the car has been running a while, say after a 100ml motorway journey, then driven hard on the b road before home, it's more likely to come on, than if its just been going 10 minutes and driven hard). It goes of again on switching the ignition off and back on, or driving at lower revs for 10 seconds or so. Any idea's as to what this could be? Did the obvious change the filter/oil but not making any difference. No unusual noises, and the car isn't down in power in anyway. Car is a 2002 S3, and has did just over 95,000mls. It has been remapped, and has always been serviced on schedule.