I always check steering gear/box mounts when doing oil change, something I have done for 35 years. It is a documented inspection point for big trucks, which is done every 90 days in CA.
1st look at bolts for powdery rust or shinny spots around the head, then go on to at least put a wrench on them and pull, if they move then I go get a torque wrench, loosen all and retorque. I can probably count on 2 hands how many loose boxes I found.