My '86 560 SEL is leaking fluid from the left rear side of the car in the spring/shock/accumlator area. In looking at the parts list at Fast Lane it shows a rear shock absorber for the car with the note "except Hydromatic". How can you tell which cars are "hydromatic" and which are not? The hydromatic shock sells for $343 and the regular shock is $83. Nuff said,

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1986 560 SEL (159K miles)