Can I use T-IV for my Power Steering?
08-08-11, 01:40 AM
#1
Can I use T-IV for my Power Steering?
This is what the dealer sold me when I asked for ATF, but then I realized that I should only use Dex III for my transmission. Is it the same way for my power steering, or is T-IV okay? Luckily, I only bought one bottle.
08-08-11, 06:36 AM
#2
Super Moderator
You most certainly can use this. However, I'd suggest using something a bit better. For years I have been using Mobil 1 ATF and have had no issues with this as my power steering fluid.
08-08-11, 07:25 AM
#3
Type IV is a modified Dextron so you are good to go -- were the 98 ES's still using the straight Dex?
You certainly can use the Mobil 1 product -- not sure what benefit it will give.
This is a straight hydraulic system.
You certainly can use the Mobil 1 product -- not sure what benefit it will give.
This is a straight hydraulic system.
08-09-11, 06:13 AM
#4
Super Moderator
Mobil 1 is a synthetic. It's got a bit different chemistry from Type IV, which incidentally is a Mobil product known as 3309 ATF. I find the Mobil 1 ATF lasts longer and keeps its 'feel' over time in the wheel. Also, I have never had any kind of leak or other PSF issue and don't know of any friends who have had one using Mobil 1 ATF or some other synthetic. I put the M1 ATF at the lighter scale of the synthetic ATFs out there in terms of viscosity, but that gives a good feel on the wheel, nothing heavy.
08-09-11, 10:32 AM
#5
All transmission fluid is technically synthetic -- it was originally whale oil.
From all accounts the Mobil 3309 is the same product as the type IV -- as it is discussed as being made for new car manufacturers. This is different then being "compatible" or "meeting specification" -- they evidently make the product that is then packaged for resale.
I have no idea if they make the fluid sold as Type IV in the USA for Toyota - Toyota I am sure like all manufacturers gets its fluids from many companies. The Mobil product is not available everyplace and with the Toyota product so reasonably priced -- I just use the IV from the dealer.
The compressibility of the fluids are the same - I'm not sure how this could changes the dynamics of the system ...
But -- many feel all these fluids are the same ............ so why does Mobil make 3309? ......... Because, they are not all the same.
From all accounts the Mobil 3309 is the same product as the type IV -- as it is discussed as being made for new car manufacturers. This is different then being "compatible" or "meeting specification" -- they evidently make the product that is then packaged for resale.
I have no idea if they make the fluid sold as Type IV in the USA for Toyota - Toyota I am sure like all manufacturers gets its fluids from many companies. The Mobil product is not available everyplace and with the Toyota product so reasonably priced -- I just use the IV from the dealer.
The compressibility of the fluids are the same - I'm not sure how this could changes the dynamics of the system ...
But -- many feel all these fluids are the same ............ so why does Mobil make 3309? ......... Because, they are not all the same.
08-10-11, 06:04 AM
#6
Super Moderator
I don't think anywhere on the Type-IV bottle does it mention ExxonMobil.
However, when I was in Mexico and would use the stuff (there wasn't a readily available better alternative, so the Toyota dealer was where I got this stuff), the Type IV fluid had a sticker on the side saying it was Exported by ExxonMobil and Imported by ExxonMobil, S.A. de C.V. (their Mexican affiliate). This picture was taken in July 2007.
However, when I was in Mexico and would use the stuff (there wasn't a readily available better alternative, so the Toyota dealer was where I got this stuff), the Type IV fluid had a sticker on the side saying it was Exported by ExxonMobil and Imported by ExxonMobil, S.A. de C.V. (their Mexican affiliate). This picture was taken in July 2007.
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