is your oil level dropping? as you could be burning oil, this is quite common on these engines, you could try a slightly thicker oil (i don't know the correct grade sorry) if its still using oil with the thicker stuff then id get a garage to do a Compression leakage test for you, this way you can find out if you have a problem with your valve stem seals or piston rings. go from there really. if my seals or rings were boned then id change them myself and only pay parts. Labour is the killer for these jobs as they are quite intricate and require special tools. Also, pictures require Photobucket or something like that (i use Photobucket) upload them there and copy the IMG code and then bobs your uncle, And fanny's your aunt.