Hi I own a k12 05 reg and it has done 100,000 miles on the clock. I've owned the car since March and use it on a daily basis doing at least 30 miles a day sometimes more. I've had to fill the engine oil up 3 times since I got the car. Is this normal? There are no leaks or smoke coming from the car. It does however make a funny noise when the oil light comes on. Any advice please?