Originally Posted by AlanAZ
My diff. took about 1.2 qts, much more than a 1/2 Liter, and $43 for a Liter of oem gear oil is 4 times the cost of RedLine, and many would consider RedLine to be superior than the OEM. The BMW TIS has it as 1 and 1.2 Liters for non-M E90 diffs.
From Mike Miller's old school maintenance schedule:
You can get the Castrol SAF-XO from Land Rover dealers for ~$12L. Same oil as BMW OEM, at a price comparable to Redline.
Given how BMW is with warranty coverage, I am using the factory spec oil until the warranty is up. After that, I too will be perfectly happy to use Redline in the diff.