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Toyota Power Steering Fluid vs. Dex III #4113255 06/02/16 10:24 AM
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Samzone Offline OP
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My 2006 Highlander says use Dexron III on the power steering cap, but of course that is an obsolete fluid so I found it strange. I called the dealership and they said use Toyota Power Steering fluid that they sell in the parts dept. I can't find any evidence of this product on the web. Does it exist, or do I have to drive down to the dealership to find out?

Re: Toyota Power Steering Fluid vs. Dex III [Re: Samzone] #4113270 06/02/16 10:41 AM
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Fsharp Offline
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Dexron III is obsolete but lives on sold as generic atf like this
http://www.walmart.com/ip/Super-Tech-Automatic-Transmission-Fluid/16213433

I use Lubegard PS fluid in my vehicles, it's supposedly universal.

Re: Toyota Power Steering Fluid vs. Dex III [Re: Samzone] #4113296 06/02/16 11:12 AM
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1000MPH Offline
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I wouldn't trust the dealer's advise on anything.
My 4Runner is spec'd for Dexon III (or II) in the PS as well. I was planning to use Mobil 1 Synth ATF, it seems popular on the Toyota off-road forums.

http://mobiloil.com/en/automatic-transmission-fluid/synthetic-atf

Last edited by 1000MPH; 06/02/16 11:21 AM.

2010 4Runner 106k mi M1 EP High Mileage 0W-20 OEM filter cartridge. Delvac synthetic gear 75W-90.
2015 Rav4 47k mi M1 EP 0W-20 OEM filter cartridge. Delvac synthetic gear 75W-90.
Re: Toyota Power Steering Fluid vs. Dex III [Re: Samzone] #4113387 06/02/16 12:52 PM
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Oro_O Offline
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You can use the same fluid you purchased for your ATF, the Castrol or Valv. you were asking about. It will be DexIII compatible. And likely synthetic, so better long-term than a current DexIII product.

Re: Toyota Power Steering Fluid vs. Dex III [Re: Samzone] #4114121 06/03/16 09:55 AM
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messerchmidt Offline
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have used mobil1 and redline d4 atf here in my 06 avalon xls. currently using amsoil signature series atf in the power steering. no issues. runs better. added a cardone inline filter as cheap insurance too.

you may wish to remove the reservoir and clean the internal mesh screen. before i do a fluid change/flush, i usually drain part of the reservoir, refill with seafoam, drive for a day oe two, and then completely flush it out with new fluid.

Last edited by messerchmidt; 06/03/16 09:56 AM.
Re: Toyota Power Steering Fluid vs. Dex III [Re: Samzone] #4114180 06/03/16 10:52 AM
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Sayjac Offline
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I used Mobil D/M with turkey baster method in my Tacoma specing Dex II/III, been working fine.

DexIII not difficult spec to meet nowadays.

I suppose if you want to go and get a synthetic fluid you can. Based on my experience with Mobil D/M, I'd just look for something like Peak DexIII or similar. They sell the Peak at Dollar General around here. MaxLife ATF be an option too.

Re: Toyota Power Steering Fluid vs. Dex III [Re: Samzone] #4114576 06/03/16 08:51 PM
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MaximaGuy Offline
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I always trust Redline PSF, works great on Toyota. Do a return line flush and its good for 60K miles (remember the capacity os 0.9Q so more frequent changes).


2018 MB GLE350
2011 Lexus ES350
2006 Toyota Highlander 4WD
Re: Toyota Power Steering Fluid vs. Dex III [Re: messerchmidt] #4114604 06/03/16 09:40 PM
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Oro_O Offline
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Originally Posted By: messerchmidt


you may wish to remove the reservoir and clean the internal mesh screen. before i do a fluid change/flush, i usually drain part of the reservoir, refill with seafoam, drive for a day oe two, and then completely flush it out with new fluid.


I am a fan of this, too. Thought I would have to rebuild a pump but this cleaned it up.

However, if you are not going to do a subsequent full flush (and it is NOT hard to do that), be very parsimonious witrh the amount of SeaFoam or B-12 as it really thins what is already a thin oil.

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