Just replace the rear shocks. 100000 on the vehicle. Dealer had replaced struts and said rear shocks were leaking. Saw no sign of leak, plus after pulling shocks I was unable to compress piston. Removed units were Sachs self leveling Nivomat shocks P/N 30683451. My question; post installation I noted that the boot on the left shock is turned a bit. The right side looks straight and good. Can I expect the boot to self correct it self after some road action of the shock or am I looking at rework on that left side to straighten the boot? I used an air gun to install the top lock nuts and did not hold the piston shaft. Probably this is why the boot rotated a bit. Thoughts or reports of past experience regarding this condition is appreciated.

I am surprised that the Nivomats failed so early. On my 1998 they lasted over 200K miles before one started to leak.

As to the boot twisting... It shouldn't have. Can you reach it and twist it back? It is just a dust cover.

Shame on you for using an air tool to tighten a bolt. That is a no no. Too easy to over torque, as the torque value is around 50-55lbs.

KlausC. Thanks for the comments. I only use the air gun on a job like this, at the lowest torque setting or by throttling the air supply, to draw the fastener down after which I use a torque wrench. In a previous life I saw how easy it was to over torque and elongate a fastener well beyond its holding elasticity if not fully parting the fastener.
The boot question is now moot. I couldn't let it go so I reworked the job and removed that shock, straightened out the boot and reinstalled it. All is well now.
Yes, I questioned the end of life diagnosis of the shocks. I couldn't tell anything in the ride. I did agree that the strut replacement was necessary. I believe the dealer just figured 100K, struts went shocks might not be that far behind. When I took off the old shocks I saw no signs of degradation, leakage, nor could I budge the piston. I have been thinking of making a jig and seeing if I can measure the force to compress the shocks. Regardless, the shocks are replaced at this point. Might of been a waste of money but I limited the expense to the cost of the shocks.
Take care and thanks.