You CAN work on this yourself, but dieseldiehard is right, be careful. When I've worked on my rear suspensoin I put the rear wheels on ramps so the car is pretty well off the ground even at full down mode. If your car is sagging in the rear you know what I mean. The systems are not that complicated but do use common sense whenever you get under a car.

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LRG
1987 300D Turbo 175K
2006 Toyota Prius, efficent but no soul
1985 300 TDT(130K miles of trouble free motoring)now sold