Lexus/Toyota claims lifetime fluid in many of their transmissions. Our 2013 GS (77K) does not have a transmission service interval (but I think there is one for other countries, just not US). I believe Aisin, who makes the transmissions, has a 60K interval.
Anyways, I just had this service done yesterday. I was gonna do it myself, but had to take it to a shop (top notch) for a suspension clunk.
I gave them the Lexus screen filter and Idemitsu WS equivalent fluid I had purchased.
I am pretty sure the existing fluid was the original factory fill.
Results? All I can say is do it. The fluid was worn, somewhat discolored but not burned.
The car definitely pulls stronger. Shifts were not bad before, but are smoother and better overall.
This also may be due to the superiority of the Idemitsu full synthetic trans fluid versus the Toyota WS.
Again, I am 100% satisfied and convinced a transmission fluid service is the way to go.
There is also piece of mind in that the break in material has been removed.
I will do a spill and fill in a week or so and call it done for the next 30K miles.
I should have done this when I first got the car.
Anyways, I just had this service done yesterday. I was gonna do it myself, but had to take it to a shop (top notch) for a suspension clunk.
I gave them the Lexus screen filter and Idemitsu WS equivalent fluid I had purchased.
I am pretty sure the existing fluid was the original factory fill.
Results? All I can say is do it. The fluid was worn, somewhat discolored but not burned.
The car definitely pulls stronger. Shifts were not bad before, but are smoother and better overall.
This also may be due to the superiority of the Idemitsu full synthetic trans fluid versus the Toyota WS.
Again, I am 100% satisfied and convinced a transmission fluid service is the way to go.
There is also piece of mind in that the break in material has been removed.
I will do a spill and fill in a week or so and call it done for the next 30K miles.
I should have done this when I first got the car.