Best gear oil for BMW 328CI?

Whats the best gear oil I can buy in england for my 328CI. ThanksBest gear oil for BMW 328CI?
did you have a look in owners book should be in thereBest gear oil for BMW 328CI?
Which transmission does your 328 CI have?. I see in the Bentley Service Manual that there are four possible Automatic transmissions, some 4 speed, some 5 speed. You would need to identify the model year of your car, but most of the 3 series Automatics use Type A Automatic Transmission Fluid (ATF). If you have a Manual Transmission, (ZF or GETRAG) you can use most any SAE 30W motor oil, but it would be wise to read the label on the side of the transmission to be sure about the suggested lubricant. Some of the BMW cars use a special permanent type trans. fliuid.