Having recently chased down some major leaks on my '87 535 I can suggest =
the following as common problem areas:
- Oil sender unit
- Valve cover gasket and check cover for flatness
- Oil pan gasket cracks and weeps on older/high milage vehicle. =
Replacement requires lifting engine of it's mount to drop the pan =
enough to r&r gasket. Using a good gasket sealant that tolerate =
petroleum based liquids is advisable. If you do this gasket =
replacement it also becomes a good opportunity to change drive belts =
(alt., ps, ac) as you have to slack off on these for the pan removal. =
Approx 4 hours labor
- Rear of cyylinder head there a rear plate gasket ( I believe it's =
referred to as the distributor plate gasket). Approx. 2 hours =
labor.=20
