when does power steering fluid need to be changed in a 2004 Grand Cherokee Lore on 2004 Jeep Grand Cherokee

my power steering fluid was changed on the suggestion of a mechanic.is this unusual ?Jeep has 60,000 miles.He also changed the transmission fluid which showed a black color.

by in Bronx, NY on December 03, 2012
3 answers 2 comments
ANSWER by on December 03, 2012
Good idea, give your mechanic a tip!
COMMENT by on December 03, 2012
should the differential gear oil (front & rear)also be changed? my mechanic suggested it. i don't go off-road with jeep.
COMMENT by on December 03, 2012
That can wait! Just have it checked from time to time. However your mech. has an advantage over us here, he can look at your Jeep.
ANSWER by on December 03, 2012
no a bad idea for preventitive maint
ANSWER by on December 03, 2012
If he does change the rear diff fluid , make sure he uses the chrysler synthetic gear oil and their friction modifier. Just a rec. , but from the few I've seen with problems , not having the OEM stuff is what made the difference. Same with the trans, if it developes a 'judder' going into 'lock-up', change back to chrysler ATF+4.