Rear Diff fluid change?
#1
Driver School Candidate
Thread Starter
Join Date: May 2010
Location: MD
Posts: 17
Likes: 0
Received 0 Likes
on
0 Posts
Rear Diff fluid change?
When should this be changed? The local place where I get my oil changed is trying to tell me every 15K miles. That seems a little early to me. I know its the same synthetic oil we use in the engine but I also know it doesn't have the same wear in the rear diff.
Can anyone tell me what the manufacturer recommends?
Thanks
Can anyone tell me what the manufacturer recommends?
Thanks
#2
When should this be changed? The local place where I get my oil changed is trying to tell me every 15K miles. That seems a little early to me. I know its the same synthetic oil we use in the engine but I also know it doesn't have the same wear in the rear diff.
Can anyone tell me what the manufacturer recommends?
Thanks
Can anyone tell me what the manufacturer recommends?
Thanks
#5
When should this be changed? The local place where I get my oil changed is trying to tell me every 15K miles. That seems a little early to me. I know its the same synthetic oil we use in the engine but I also know it doesn't have the same wear in the rear diff.
Can anyone tell me what the manufacturer recommends?
Thanks
Can anyone tell me what the manufacturer recommends?
Thanks
Per the Edmunds car maintenance schedule, it shows that the differential fluid is to be changed every 15,000 miles. You need to check with the Lexus maintenance schedule (or contact the Lexus dealer). On Edmunds, it estimates the cost of fluid as $ 10, and labor as $ 25.
#6
I am surprised to see that Edmunds (or anyone else for that matter) would recommend a diff fluid change at 15k miles. That just seems too early unless one's diff is subject to a particularly harsh environment (i.e. frequently towing).
#7
I used to have an Acura MDX, and the present differential fluid change interval is 30,000 miles after an initial change at 15,000 miles. I believe those are the Acura recommended changes now. However, the MDX differential differs from the Lexus RX setup. So, it seems like some manufacturers still recommend changes well before 50,000 - 100,000 miles. My experience with Edmunds is that they post the manufacturers recommended maintenance schedule.
Trending Topics
#8
Although I can't speak for the others, but I feel that differential fluid does not generally need changing unless the rear differantial has been underwater or you do a lot of heavy-duty towing at or near maximum allowable. If you use your RX under those conditions, then your should change your diff. fluid every 15000 miles. I will say that there is nothing wrong with changing it periodically, just that it is generally not necessary until the factory-specified interval. Anybody know what the RX maintenance manual specified rear diff. fluid change interval is for owners that dont tow or go off road?
http://www.lexus.com/pdf/service/RX_RXh_WSG.pdf
Starting on page 49 is the stated maintenance for 15 K miles +.
For the rear differential oil change, there are no scheduled changes thru 150K miles unless you use the vehicle for towing or heavy vehicle loading. If that is the case, you then change the rear fluid every 15,000 miles. Thus, Edmunds is using the "severe use" schedule on their website for maintenance. I guess I would be inclined to change it at 100,000 miles if I plan to keep the vehicle for a longer time (I do no towing).
#9
JimH2, that is interesting that you found that in the Rx450h's maintenance manual. According to road and track, the Rx450h use an electric motor to drive the rear wheel and only the RX350 have a rear differantial.
http://www.roadandtrack.com/tests/dr...rx-350-rx-450h
"The RX 450h's awd option replaces the gasoline version's driveshaft and rear differential with a second traction motor, which reduces weight and allows smooth power shuttling."
http://www.roadandtrack.com/tests/dr...rx-350-rx-450h
"The RX 450h's awd option replaces the gasoline version's driveshaft and rear differential with a second traction motor, which reduces weight and allows smooth power shuttling."
http://www.amsoil.com/mygarage/vehic...+LEXUS+RX350+A
http://www.amsoil.com/mygarage/vehic...LEXUS+RX450H+B
#10
Driver School Candidate
Thread Starter
Join Date: May 2010
Location: MD
Posts: 17
Likes: 0
Received 0 Likes
on
0 Posts
Thanks for the insight guys. I knew the diff fluid didn't need changed yet. I drive highway 30K+ miles a year no towing. I think I will change it at 60K when I do alot of other stuff.
I knew they were full of it when they said it uses the same oil as in the engine so I told them no. They always pull the old trick of putting a bit of the oil on paper and if it is discolored they recommend changing it. Oil gets dirty the minute after you change it and run it a few miles.
I will tell them the real story next time I am in and tell them to shove it.
I knew they were full of it when they said it uses the same oil as in the engine so I told them no. They always pull the old trick of putting a bit of the oil on paper and if it is discolored they recommend changing it. Oil gets dirty the minute after you change it and run it a few miles.
I will tell them the real story next time I am in and tell them to shove it.
#13
I believe that's inside the transmission. But thats a best guess.
#14
http://www.edmunds.com/car-maintenan...&mileage=15000
Per the Edmunds car maintenance schedule, it shows that the differential fluid is to be changed every 15,000 miles. You need to check with the Lexus maintenance schedule (or contact the Lexus dealer). On Edmunds, it estimates the cost of fluid as $ 10, and labor as $ 25.
Per the Edmunds car maintenance schedule, it shows that the differential fluid is to be changed every 15,000 miles. You need to check with the Lexus maintenance schedule (or contact the Lexus dealer). On Edmunds, it estimates the cost of fluid as $ 10, and labor as $ 25.
If I were concerned I would contact Lexus corporate, not a dealership. The dealership is going to say anything to sell you a service
#15
Found the link to the manual:
http://www.lexus.com/pdf/service/RX_RXh_WSG.pdf
Starting on page 49 is the stated maintenance for 15 K miles +.
For the rear differential oil change, there are no scheduled changes thru 150K miles unless you use the vehicle for towing or heavy vehicle loading. If that is the case, you then change the rear fluid every 15,000 miles. Thus, Edmunds is using the "severe use" schedule on their website for maintenance. I guess I would be inclined to change it at 100,000 miles if I plan to keep the vehicle for a longer time (I do no towing).
http://www.lexus.com/pdf/service/RX_RXh_WSG.pdf
Starting on page 49 is the stated maintenance for 15 K miles +.
For the rear differential oil change, there are no scheduled changes thru 150K miles unless you use the vehicle for towing or heavy vehicle loading. If that is the case, you then change the rear fluid every 15,000 miles. Thus, Edmunds is using the "severe use" schedule on their website for maintenance. I guess I would be inclined to change it at 100,000 miles if I plan to keep the vehicle for a longer time (I do no towing).