It's a performance motor so full synthetic oil, castrol is recommended but mobile 1 can also be used as well as any FULL synthetic oil.
How do you reset the oil service warning light manually on a 2003 BMW 525i?
Yes !
You need two special BMW reset tools.
What year 525i? The oil recommendations vary. Not all 525's use the same engine or the same oil.
8
At the bottom of the engine block.
How do you manually reset the oil life monitor on a BMW 525i
6.1 Liters
The best oil for a 1992 BMW 525i requires a Grade 1 oil. If the temperature that you usually drive in is above 5 degrees Fahrenheit then you require 15W-40 engine oil.
7 quarts of mobile 1 synthetic oil.
On the top of engine in a casing in the front of the engine
next to the power steering tank.