does the vanos make the marble noise or not? im really not quite sure if my car has that problem or not, honestly i really dont care because if i do have the sticky vanos that means i get really good gas mileage, and for the way i drive my car, 29 is very good... however im definately not ready to tear apart my engine and timing for a problem that really isnt a problem. i mean my car makes NO noise, no ticking, no marbling, or anything like that, but i dont know if it has to make the noise in order for the vanos unit to be sticky, but on that matter, if i use a different type of oil, such as mobil 15w-50 synthetic, would that help? right now i use castrol syntec 5w-30