I changed my oil today on my 12 TDI Golf the dealer sold me 5 quarts with the filter, said it takes 4.5 quarts. I first put 4 quarts and backed it off the ramps and checked the oil it was at the lower end of the dipstick so I added 1/2 a quarts but it still seem low. I'm going to let it sit overnight and check it in the morning. I looked at my owners manual and it states 5.8 quarts which I know is incorrect. When did they change it?