Well ive done about 6k on my oil so im due a change, The car now ( after paint work ) will only get minimal blasts. But i do get stuck in trafic for about half hour a day. Ive got Selenia racing 10/60w in at the moment and it seems to have been fine ( i was advised to try it by a tuner who runs a turbo'd car quite hard ) But its away from the standard grade. he just said it will want changing every 6k . Firstly do people use engine flush or just drop the old and pop in the new? The engine has only done 15k in total so i wouldnt imagine there would be much to flush??