mek88

OIL FOR LSD EQUIPPED REAR DIFFERENTIAL RX300

I have a 99 RX300 AWD with optional Limited Slip Differential at the back. I am the 2nd owner, just bought it last year @90K miles. So far so good.
Current mileage is 102000 Miles. timing belt hasn't been replaced yet.

I just went under the car, seems to me the front differential, transmission, transfercase, rear LSD differential have never been opened at all.
There is no scratch/mark at all, and the green colored marking are still at these plugs.


What kind of oil, should I use for the rear LSD differential?(This is RX300 with optional Limited slip differential, I belief LSD use different oil rather than GL5-90W. Does Mobil 1, 75W-90 is acceptable)


Also, can someone reassure me that front differential oil can be filled thru transmission dipstick?

I saw transmission drain plug and front differential drain plug, but I did not find the front differential oil filler.


I just don't want to oopen the front diff plug and then unable to fill it back with Toyota T-IV oil.


Appreciate any advise
Email: mek88@yahoo.com / Los Angeles

DaveGS4

iTrader: (2)

I'll let someone else more knowledgeable on the RX respond, but when I had the TRD LSD put into my GS400 the dealership did not have the right kind of fluid on hand (which I have subsequently changed out by adding redline LSD fluid).

They did add to the standard diff oil a friction modifier they said was for the RX300 with LSD. So I suspect there is an additive that the dealers have they put into the regular fluid.