Transmission fluid drain and fill

I am looking to do a transmission drain and fill on my 2015 5.7L with 185K miles. Should I go with Toyota WS, Aisin WS or Idemitsu WS fluid? Anybody have experience with Aisin or Idemitsu?

Also, per the carfax service history, it was flushed at 73K miles.

 

Why not just use the Toyota? It's probably the cheapest and most readily available

 

Recently fully flushed mine at 60K. Got the Toyota WS from Amazon. 12 quarts.

 

Amazon has Toyota WS 6qt pack for $90 and Idemitsu 5qt is $45. I should probably check with my local dealership.

 

RockAuto usually has good pricing on Aisin WS - around $7 a quart if memory serves, plus some reasonable shipping. I usually buy it by the 12 pack since shipping isn't any more than a four quarts. I have used Toyota and Aisin WS with very good results. The dealer went from $9 a quart to $19 so Aisin has been my go-to for the last few years.

 

Yes, I saw it on rockauto and trying to decide which one to go with.

 

Using the current 25% off sale and free shipping over $75, you can get 8 qts of WS delivered for ~$82 from Serra/Toyota of Decatur. And you can be sure it's genuine Toyota. If you order from Amazon, be sure that the seller is an actual dealer or you could end up with fake parts, although I haven't heard of knock-off WS.

 

Thanks!

 

I've used both. Idemitsu has a comparable viscosity to Toyota WS. AISIN has a thicker viscosity and both idemitsu and Aisin wasn't brown colored like Toyota WS. I use Idemitsu in my Highlander. All 3 fit the bill...

 

Thanks.