7 QUARTS OF SYNTHETIC OIL.
6.0 liters
BMW 745li oil filter location
5 quarts
Change the oil.
Six I think
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.
you can buy a reset tool, or ask the mechanic to use his reset tool to change it. the tool cost $50.+
High mileage 10w-30, they have additives to help keep seal soft and more detergents to keep carbon build up down than normal oils.
10W-30
best oil is 5w30
6.1 Liters
10w 40 is recommended