Valvoline max life how long does it last

I flushed the Toyota WS transmission fluid out about a year and a half ago and driven about 40k miles since then. I called Valvoline and asked them how long it lasts and they said to go by the manufactures recommendation of 100k and they would stand by that.

To me that seems a little long. To those that have made the switch how often do you do a pan drop or flush? I currently have 88k on a 2012 off-road.

 

The manufacturer of the A750 (Aisin) says to change the fluid every 30,000 miles or 25,000 for severe duty.

Here is a picture reguarding how long fluid can last, it mostly depends on heat.

 

I believe the change interval is now 60k on our tacomas. @gearcruncher is the resident transmission guru.

 

Also check out this post for tons of information on these transmissions.

https://www.tacomaworld.com/threads...th-pics-for-second-gen-4-liter-trucks.289913/

 

I for one say it's hard to beat a person at their trade. When you have years of experience and education behind the decisions of the Engineers, Chemists and suppliers of a product - I usually do not second guess them without very good reasons (observed Contamination, Burned, etc.). But if it floats your boat - just change it now ....

 

The general rule of thumb I've deduced from transmission shops is do a drain/refill every 30-40K, or a full flush every 80-90 K. And change the filter every 100K or so. This is for normal use. Severe duty service would shorten that 25-50%.

Toyota says to inspect/adjust ATF every 30K, and to replace ATF every 60K if towing (aka severe service).

I flush every 80K or so. I don't tow but do off-road in the dez. 80K is a good compromise for me.

 

You are only 12000 miles from manufacturer recommendation. Just change it now, no worry, no problem just be happy. After this just follow manu rec or change it a little sooner if it makes you feel better.

 

Sooner = Better
Later = ??