Synthetic Power Steering Fluid ????
Large Impressive Member
Joined: Jul 2003
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From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
I'm using some and I think it's Royal Purple? My speed shop guy recommended it and it's been in for some time with good results.
Drifting
Joined: Jul 2002
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From: Olathe, KS USA
Originally Posted by CentralCoaster
Mobil 1 ATF you dummy! 
That's what I use.
That's what I use.How long have you been use it as PS fluid??
I was thinking about using it in the PS, already use it in my transmission.
Large Impressive Member
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From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
I'm not saying it'll hurt anything, many cars come with ATF in the P/S but when they recommend a special fluid, such as power steering fluid, I prefer to remain with that.
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Large Impressive Member
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From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Originally Posted by CentralCoaster
It's all the same except for the red die.
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From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Originally Posted by CentralCoaster
I've searched for the chemistry on these things, and can't find crap for info.
Thread Starter
Team Owner
Joined: Jan 2003
Posts: 20,324
Likes: 250
From: Summerland B.C. Canada
Originally Posted by CentralCoaster
Mobil 1 ATF you dummy! That's what I use.
That's what I use.
Iv'e used ATF for power steering fluid for the last 29 years. Why does owning a vette change my way of thinking. Are their better additives and conditioners in the power steering version ??
Or is it lacking color ??
Racer
Joined: Apr 2003
Posts: 342
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From: Kalamazoo MI
Originally Posted by Corvette Kid NC
I would think that the main differences would be in additives, etc. A lot of the stuff I've worked on over the years has been HD trucks and such. In KWs, for example, ATF has always been the factory fill. Internationals have most generally used and only recommend the clear P/steering fluid. I'd be curious to know more about it too.
Hydraulic clutch fluid is basically DOT3 brake fluid with anti-squeak additives. I also agree the chemistry is impossible to find. As an organic chemist I would find the actual chemical components interesting. Most corporations are loathe to release proprietary information. Unless it was fit for human consumption, then they would have to disclose that info per FDA regs. I wouldn't recommend anyone go slug a bottle of power steering fluid though!I would imagine the major difference between the types of fluids recommended for a specific application is the viscosity at various thermal levels. For example your transmission will see more heat than your hydraulic braking lines, so needs to maintain a certain viscosity for a given amount of heat.
For your trivia buffs out there did you know the prefered unit of measurement for liquid viscosity is the poise, most commonly in the magnitude of centi-poise (pronounced like combination of 'poison' and 'eazy').
