Questions/Concerns on a '05 Transmission Fluid "Exchange"
01-17-14, 10:23 PM
#16
Aisin designed the transmission to have the fluid exchanged. From the lab results posted in the other thread it showed clearly the important friction modifiers were diminished at 100k miles. Not horrible but less then 40% of their original value. As long as the correct amount and type of fluid is exchanged the longevity of the transmission is extended. This has been shown time and time again and is documented in the Aisin 5 speed. I don't know what Lexus was thinking by not putting in at least a 60k mile exchange. I'm doing mine again in about 5k miles and then every 30.
I also think the worry about flushing the LS430 transmission might be a little exaggerated. I have yet to see one thread about flushing ruining an Aisin transmission. I'm not a fan but Aisin's are not known to build up sludge.
I also think the worry about flushing the LS430 transmission might be a little exaggerated. I have yet to see one thread about flushing ruining an Aisin transmission. I'm not a fan but Aisin's are not known to build up sludge.
01-18-14, 06:27 AM
#17
If Aisin says something about their transmissions in a Lexus that Lexus does not want to hear, Lexus will deal with them the "Corporate" way.
So I'm waiting for Aisin to say something official :^)
Sent from an Android device using IB Automotive Group forum reader.
So I'm waiting for Aisin to say something official :^)
Sent from an Android device using IB Automotive Group forum reader.
01-18-14, 06:48 AM
#18
02-13-14, 07:31 PM
#19
BMW went to "Lifetime Fluid" years back.
The tranny in my old 328i (a GM unit modified by BMW) is toasted at this point - most probably due to the age of the ATF.
It should have been changed by previous owner, but wasn't.
Transmissions need the fluid *changed* and a few new quarts does not do the job.
A fluid exchange is the right way to do it; better than dropping the pan.
As a DIY project it's not very difficult, no machinery other than some plastic tubing, and a few gallon milk jugs needed.
.
The tranny in my old 328i (a GM unit modified by BMW) is toasted at this point - most probably due to the age of the ATF.
It should have been changed by previous owner, but wasn't.
Transmissions need the fluid *changed* and a few new quarts does not do the job.
A fluid exchange is the right way to do it; better than dropping the pan.
As a DIY project it's not very difficult, no machinery other than some plastic tubing, and a few gallon milk jugs needed.
.
02-13-14, 08:01 PM
#20
The one part that I've not seen discussed is having the fluid analyzed to check how well the additive package is holding up for the given miles. Once there are some numbers out there, you will have some data to base WS tranny service on. Blackstone will do this for ~$28 and it is well worth it to know how the fluid is aging in your specific car.
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