[Colvcaleb73]

I need to do a service on my transmission. I’ve heard mixed reviews on what trans fluid to use Any guidance? It has a little bit of an upshift flare.
2006 toyota sienna LE FWD

 

[DC_Dave]

Toyota or Aisin T-IV. I'd also change the filter if it hasn't been done and look at the magnets. Good luck!

 

[rwvuletic]

if you can find it, I have been using Mobile ATF 3309 (which meets the T-IV spec) for the last 15 years. Works perfectly and is usually less expensive than Toyota. I would not hesitate to use Aisin as DC_Dave recommends above. Aisin made the transmission in the Sienna.

 

[Colvcaleb73]

if you can find it, I have been using Mobile ATF 3309 (which meets the T-IV spec) for the last 15 years. Works perfectly and is usually less expensive than Toyota. I would not hesitate to use Aisin as DC_Dave recommends above. Aisin made the transmission in the Sienna.

What are your thoughts about the Idemetsu TLS, (type iv) ? Or even the CASTROL trans max import stuff

 

[rwvuletic]

What are your thoughts about the Idemetsu TLS, (type iv) ? Or even the CASTROL trans max import stuff

I have no experience with either, so I don't have an opinion on them.

As a starting point I research what fluid specs they say they meet. If a fluid meets MANY specs that I believe to not be compatible (i.e. it is marketed as a universal or near universal fluid), I will not use it. For example, if a fluid says it can be used in place of both T-IV and WS, I don't believe it and don't use it.

If in doubt, I would suggest using the Toyota fluid. Nobody likes to feel like they are overpaying for ATF, but in the grand scheme of things, even full-price Toyota ATF is inexpensive to the transmission that it runs and protects.

 

[sixto]

In regards to the opening statement, reviews aren’t mixed for Toyota type IV fluid. Save money somewhere else.

Sixto
‘04 LE FWD 207K miles

 

[Colvcaleb73]

In regards to the opening statement, reviews aren’t mixed for Toyota type IV fluid. Save money somewhere else.

Sixto
‘04 LE FWD 207K miles

Yeah, I just ordered 12 qts of Toyota type iv. A couple of months ago, I put WS in it, and I was desperate and the only thing I had was valvoline maxlife multi vehicle. So now I just want to put the right fluid in and be done with it

 

[paul r]

No guess work involved. Just do it ,T-IV for me. Its not an every day purchase!

 

[supra129]

Stick with Toyota fluids, don't take a chance.

 

[honda coaster]

I have been using valvoline max atf from walmart.. No problems.. Since new to now 270k miles.. Did full flush through cooler lines while car on.. Took 12 quarts each time

Sent from my SM-N960U using Tapatalk

 

[wingzam]

I use Red Line ATF D6. Heard it was the best.
Trans seems to love it.

 

[thanwu]

I used Toyota T-IV transmission fluid in the beginning, then switched to Castrol Transmax Import Multi-Vehicle Automatic Transmission Fluid (synthetic) later. No issue so far with 231k miles on my 06 XLE FWD.

 

[mtdelvecchio]

I used Toyota T-IV transmission fluid in the beginning, then switched to Castrol Transmax Import Multi-Vehicle Automatic Transmission Fluid (synthetic) later. No issue so far with 231k miles on my 06 XLE FWD.

I'll throw in my experience for what it is worth: I have been towing a small pop up (2100lbs) for about the last 75,000 miles with my 2006 LE FWD, now with 195,000 on it. I have drained and refilled the Trans regularly. Once I started towing I noticed that my trans fluid was quickly turning brown. I assumed it was gettiing too hot with the towing. I started using Royal Purple due to it getting good reviews regarding tolerating higher temps. Since I made the swich, about 50,000 miles ago, I never get the fluid turning that brown color. Now, full disclosure I did add a trans cooler as well, but I did use the Royal Purple for several seasons priot to putting on the cooler. Trans still doing well, smooth shifts, no issues with towing.

 

[MD_2009_Sienna_Guy]

I need to do a service on my transmission. I’ve heard mixed reviews on what trans fluid to use Any guidance? It has a little bit of an upshift flare. 2006 toyota sienna LE FWD

Good luck with the fluid, but at this age it may be the #1-2 and #2-3 shift solenoids? Ask me how I know this.....

 

[paul r]

Ask me how I know this.....

Did you replace the solenoids in your van by yourself?

 

[MD_2009_Sienna_Guy]

Yes. And by some miracle managed to get it back together, but I will never, ever do it again. Stripped threads in aluminum valve bodies, check balls falling all around my dirty garage floor.....a nightmare experience. It fixed the problem, however.