Just picked up an RHD E34 520i SE Touring and I've got a pronounced squeak coming from rear suspension (just driver's side). The guy I bought it off said it was the seal dried out in recent hot weather. If this isn't complete rubbish anyone know how I get to the seal and what lubricant I need to use? If this is unlikely what could be alternative cause?

Also would love to hear from anyone with tuning/enhancement tips for the M50 24V engine.

Cheers
Adrian