Re: Quaker State European 5w-40 Synthetic and what the - The 7 Series (E65/E66) Message Board

I would not be to concerned about the oil that was put in your car. I would be more concerned about frequency intervals. I would suggest you change your oil every 5K miles and no more than 7.5K (not 15K), way too long no matter what type of oil you have. Remember that these engines are very highly engineered and to fix a problem requires between $5,000 and $7,500 (from what I have heard). It is in your best interest to keep that oil changed so there is no sludge build up.

If you want to change the oil yourself, it is a breeze. There are 3 tools required. The drain plug has a socket, the filter has 2 sockets. Remember to get the 24mm 6 point socket. Jack up the car, remove the small plug for the oil filter to drain the oil out of the filter, then drain the oil and lastly remove the filter housing.

The tools will run you about $75 plus the oil and filter for the first go around. After that you can change your oil for $50, while other places will charge you $125 to $150.

I would contact Bav Auto and talk to them about oil. The Lubro Molly sold in the 5 quart is the best oil on the street for the price. Made in Germany for German cars. You can use Amsoil or Castorl Edge (top end oils). That is what I would use in your situation.

I personally change my oil 2X per year and use the Castrol 100% Synthetic Oil in a 5 quart container. I pick it up for $22. The oil is $44 (9 quarts) and the filter is about $8 (Mann)

Hope this helps. If you need further help, please touch base. I have been changing oil in cars since I was 12 years old. I have even used the cheapest oil you can find @ Wal Mart in a Lexus (every 3K) and drove the car to 250K miles without any problems or concerns. The new owner is at 312K @ this moment.

Thank you.