Go to the BMW E34 website. He has all the answers!!!
http://www.bmwe34.net/E34main/Maintenance/Transmission/Differential.htm
no
Inside the trunk on the left side, behind the covering.
Yes, the BMW M20 engine uses a timing belt. It should be replaced (along with the tensioner) every 70000 kM.
BMW 535i (E34) engine code 36 6S 1 3535cc is a straight 6 engine.
Check your fuel filter. It is located under the driver's side. You have to remove a plastic cover.
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