Just finished following after discovering small leak on rear shock on my BMW (105k, original shocks, track car):
All coolant hoses
Water pump
Thermostat
Expansion tank
Found drop of oil on oil pan gasket. Was not sure it is that or leaky oil sensor gasket. But since pans are know to start to leak around this mileage, changed that too.
All control arms, sway bar links, bushings etc. in front.
All control arms, links, sway bar bushings in rear. Guid rods and wishbones replaced with M3 version, lighter, forged aluminum.
Powerflex rear subframe bushings.
All four corners got Bilstein B6 dampers. Rear shocks got upper and lower Monroe mounts which proved as huge upgrade in these E90 3 series.
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