I've got a '92 Saturn SL1 w/ 100K of urban driving on it. Several months ago I took it to a dealer for routine service. Part of the service was a tire rotation. I told them I just had the tires rotated just do the rest of the service but don't rotate the tires and don't charge me for rotating the tires. They replied they can't perform the scheduled maintenance w/o rotating the tires again. The maintenance wasn't done only an oil change was done. My question is does the drive train need to lubricated? What about the front end CV joints? The standard shift mechanism has become stiff and the door locks are harder to open. What should I use to lubricate the locks and shifter? Thanks, Mike