What power steering fluid - Toyota FJ Cruiser Forum
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#1 (permalink) Old 08-15-2011, 09:50 PM
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What power steering fluid

So i know the manual says use Dexron ii or iii however i can't find that where i am.... What could i substitute for it? could i use Mobil 1 Synthetic ATF?

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#2 (permalink) Old 08-16-2011, 06:45 AM
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Re: What power steering fluid

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could i use Mobil 1 Synthetic ATF?
Yes, and your truck will thank you for it. If you completely flush the power steering and re-fill it with synthetic ATF (like Mobil 1) you will notice a dramatic improvement.

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#3 (permalink) Old 08-16-2011, 06:57 PM
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Re: What power steering fluid

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Yes, and your truck will thank you for it. If you completely flush the power steering and re-fill it with synthetic ATF (like Mobil 1) you will notice a dramatic improvement.
thats awesome, thanks. I don't have time to do a full flush in the next 2 days as i'm going away, is it ok to top up with the synthetic and then do the flush when i get back?

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#4 (permalink) Old 08-16-2011, 07:01 PM
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Re: What power steering fluid

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thats awesome, thanks. I don't have time to do a full flush in the next 2 days as i'm going away, is it ok to top up with the synthetic and then do the flush when i get back?
Yes, Mobil 1 is compatible with all Dexron-type ATF. Top up as much/long as you want, if you're not having any other power steering problems.

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#5 (permalink) Old 08-16-2011, 07:07 PM
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Re: What power steering fluid

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1911 previously said: View Post
Yes, Mobil 1 is compatible with all Dexron-type ATF. Top up as much/long as you want, if you're not having any other power steering problems.
solid.... thanks a lot!

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#6 (permalink) Old 09-23-2011, 12:42 PM
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Re: What power steering fluid

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1911 previously said: View Post
Yes, and your truck will thank you for it. If you completely flush the power steering and re-fill it with synthetic ATF (like Mobil 1) you will notice a dramatic improvement.
What type of "dramatic improvement" will be be noticing? My steering is pretty mellow as it is. Any less feedback and it would be like a Chevy.

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#7 (permalink) Old 09-24-2011, 11:54 AM
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Re: What power steering fluid

I personally used Amsoil ATF in the power steering system. I would also consider the Redline power steering fluid

AMSOIL - Synthetic Multi-Vehicle Automatic Transmission Fluid (ATF)

Red Line Synthetic Oil - Power Steering and Misc. - Power Steering Fluid

Flushed it after the first year, was a bit surprised at all the crap that came out. THe drained fluid had a metallic sheen to it

I flushed it again a couple of years ago and the drained fluid did NOT have a metallic sheen to it. Was absolutely clean

Biggest improvement is cold weather operation, the synthetic really helps there. At the upper temp limit, the pump won't groan like some here have reported

Note: if you actually do offroad, do yourself a favor and also put in a power steering cooler. There are threads here on how to do that

If you live in a moderate climate, never offroad, never have temps <-20 F, it is still a good idea to flush the system. You can use any conventional ATF then.

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#8 (permalink) Old 03-27-2014, 07:51 PM
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Re: What power steering fluid

I flushed out the factory ATF power steering fluid with AMSOIL (formerly known as AMZOIL) Synthetic PSF (not ATF). Then flushed that out and filled with Synlube PSF. i did this within the first 500 miles of my new FJ. Once it gets discolored i will flush and fill it again.

I recommend keeping up on your power steering maintenance as Toyota isn't known for the best power steering systems. For a real life example, my other half's Lexus 300 had its power steering go at 68,000 miles. And yes, it was properly maintained.
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#9 (permalink) Old 03-28-2014, 05:22 AM
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Re: What power steering fluid

^^^I've read that using PSF is a no no. BTW, Dexron VI is backwards compatible. Dexron VI backward compatibility | ATF, Differential, Trans, Brakes, P/S | Bob Is The Oil Guy

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#10 (permalink) Old 03-29-2014, 08:21 PM
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Re: What power steering fluid

So far, so good with the PSF I'm using. They specify it as universal for power steering systems that use either ATF or regular PSF.

I had a Subaru that specified ATF for the power steering and used the Synlube universal PSF for 60,000. Unfortunately, this car was totalled in an accident that wasn't my fault. So, based on that I think I'll be ok with it in the FJ.
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