Background: Stella, our 1987 740 sedan, is non-turbo, with an automatic transmission with the usual floor mount shift lever.

I've been noticing rather dramatic movement of the shift lever occasionally as I stop the car, with a "clunk" sound as it happens. I've done a visual inspection of the motor mounts (would have done more, but it started raining, and I work in the driveway), and the following is true of the transmission mount: 1. bottom of the bracket that bolts to the back of the tranny is below the top of the motor mount; I can feel some cracking in the rubber around where it sits. 2. there's about 1/2 inch between the deeply flanged sort of washer that the mount bolts through and the bottom of the mount. 3. I can move the mount up and down easily by hand, without any grunting at all.

On the front mounts, the metal flange that rests on top of the mounts is evenly sunk into the rubber, like you're pushing gently on freshly-risen bread dough.

Can anyone confirm whether these are symptoms of bad motor or transmission mounts? If just the latter, is it good practice with the 740's, as it is with the 240's, to replace all mounts at the same time? The front mounts are pricey little critters.