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| Expert | Average Ratings | Expertise |
|---|---|---|
Don BerlanU.S.
Available
|
ASE Master Mechanic for 25 years. Can help with all aspects of BMW repair. I especially enjoy driveablity problems, mechanical or electrical. |
I think the best for this would be to refer you to the Bently Repair manual.You can get them from Bavarian Autosports 1-800-535-2002. Working on all models and makes I wouldn't want to send you in the
Changing from synthetic to an oil like Castrol isn't too much of an issue assuming the oil wasn't always synthetic.The consumption maybe because of the oil change.You need to examine the plugs and seals/gaskets
Replacing the resistor only would change the fan speeds,The motor,was it a new unit?Did you have to repace the cage on the motor?As far as heat goes,replacing the the thermostat, is where I would look
There isn't a normal mileage interval for either.If you think there is a problem with the chain I would suspect the plastic guides that do wear out but at over 200k.The wheel bearings are a sealed unit
I am not sure wether the brake light is out or the display is saying the brake lights are out.You have checked power? then check for the grounds(brown wires).Although the display may say there is a light

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