Try to search something different in this manual:
fuel additives, oil additives, check engine, brake rotor, engine oil, manual transmission, towing, automatic transmission
Or view whole manual here:
View, print and download for free: OBD port - BMW 525i 1990 E34 Electrical Troubleshooting Manual, 368 Pages, PDF Size: 14 MB. Search in BMW 525i 1990 E34 Electrical Troubleshooting Manual online. CarManualsOnline.info is the largest online database of car user manuals. BMW 525i 1990 E34 Electrical Troubleshooting Manual PDF Download.
All product names, logos, and brands are property of their respective owners.