Is Synthetic Power steering fluid ok?
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RE: Is Synthetic Power steering fluid ok? - 10/8/2007 3:21:48 PM
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IDUA ORTTAUQ 6A
Posts: 73
Joined: 9/7/2007
From: Bristol, Rhode Island.
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quote:
ORIGINAL: Cappachinoo
I don't know what the onwer before me put in the car, but I need power steering fluid. I brought some synthetic power sterring fluid. Just to say, if the car had non-synthetic fluid, is it ok to mix synthetic with it? I didn't add any fluid yet, I wanted to check first, I asked the people at the parts store, but I halfway dont belive them, they said it dont matter.
I was told here that Audi uses MINERAL oil for power steering fluid, it also says such on my fluid reservoir. I wouldn't think you would want to mix the two together.
I have wanted to change my steering fluid too and wonder if the system were drained could a synthetic fluid be used instead?
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RE: Is Synthetic Power steering fluid ok? - 10/9/2007 6:31:12 AM
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Cappachinoo
Posts: 240
Joined: 7/2/2007
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I never heard of anyone draining the power steering fluid, how would you do that? I would like to use the synthetic fluid because I feel like its better.
_____________________________
Just my 2 cents, keep the change....and your smart remarks
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2004 A6 S-Line
Dolphin Grey on Black, Cherry Wood
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RE: Is Synthetic Power steering fluid ok? - 10/9/2007 2:36:13 PM
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IDUA ORTTAUQ 6A
Posts: 73
Joined: 9/7/2007
From: Bristol, Rhode Island.
Status: offline
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quote:
ORIGINAL: Cappachinoo
I never heard of anyone draining the power steering fluid, how would you do that? I would like to use the synthetic fluid because I feel like its better.
It's not unheard of to change power steering fluid, it's just that most people never do it! Your hydraulic brake fluid should be flushed periodically too, and many people never do that either. On Mercedes Benz cars, the power steering pump has a filter that is also changed upon fluid change. I plan on changing my fluid soon, and I too think synthetic might be better, but the mineral oil Audi uses is non-hygroscopic, meaning that damaging moisture cannot be absorbed into the mineral type power steering fluid (as it is evaporated out) I think it would be safer to stay with what Audi uses.
< Message edited by IDUA ORTTAUQ 6A -- 10/9/2007 2:55:17 PM >
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RE: Is Synthetic Power steering fluid ok? - 10/10/2007 8:44:49 AM
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Cappachinoo
Posts: 240
Joined: 7/2/2007
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I think you can mix Synthetic with Non-Synthetic. Here is the link.
http://www.blauparts.com/audi/audi_fluid/audi_power_steering_fluid.shtml
Can You Mix CHF 7.1 Non-Synthetic Mineral Base Power Steering Fluid With CHF 11S Synthetic Mineral Base Audi Power Steering Fluid?
There has been a good measure of controversy over this question. Here is what our own experience shows. Over the last decade we've had no compatibility problems mixing the CHF 7.1 non-synthetic mineral base fluid and the CHF 11S synthetic based Audi power steering fluid. No problems with our own vehicles and no problems with our customers vehicles. Our success in mixing the 2 Audi power steering fluids coincides with the Audi tech bulletin 48-89-T07 issued in November 1989. It states "The new [synthetic Pentosin 11S] and old power steering fluid [non-synthetic Pentosin 7.1] can be mixed if necessary ... the part number [remains] unchanged." So according to Audi, you can mix the 2 Audi power steering fluids. Even though the composition of the fluid changed (CHF 11S synthetic mineral oil vs CHF 7.1 non-synthetic mineral oil), Audi didn't even change the part number. All 1990 - on Audi models have come filled from the factory with the synthetic CHF 11S Audi power steering fluid (G002000). Please Note: Never mix generic power steering fluid or other fluid with the CHF 7.1 or CHF 11S Audi hydraulic fluid (G002000). If you or someone else did, flush the Audi power steering fluid as described below.
< Message edited by Cappachinoo -- 10/10/2007 9:05:11 AM >
_____________________________
Just my 2 cents, keep the change....and your smart remarks
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
2004 A6 S-Line
Dolphin Grey on Black, Cherry Wood
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RE: Is Synthetic Power steering fluid ok? - 10/10/2007 2:23:49 PM
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IDUA ORTTAUQ 6A
Posts: 73
Joined: 9/7/2007
From: Bristol, Rhode Island.
Status: offline
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quote:
ORIGINAL: Cappachinoo
I think you can mix Synthetic with Non-Synthetic. Here is the link.
http://www.blauparts.com/audi/audi_fluid/audi_power_steering_fluid.shtml
Can You Mix CHF 7.1 Non-Synthetic Mineral Base Power Steering Fluid With CHF 11S Synthetic Mineral Base Audi Power Steering Fluid?
There has been a good measure of controversy over this question. Here is what our own experience shows. Over the last decade we've had no compatibility problems mixing the CHF 7.1 non-synthetic mineral base fluid and the CHF 11S synthetic based Audi power steering fluid. No problems with our own vehicles and no problems with our customers vehicles. Our success in mixing the 2 Audi power steering fluids coincides with the Audi tech bulletin 48-89-T07 issued in November 1989. It states "The new [synthetic Pentosin 11S] and old power steering fluid [non-synthetic Pentosin 7.1] can be mixed if necessary ... the part number [remains] unchanged." So according to Audi, you can mix the 2 Audi power steering fluids. Even though the composition of the fluid changed (CHF 11S synthetic mineral oil vs CHF 7.1 non-synthetic mineral oil), Audi didn't even change the part number. All 1990 - on Audi models have come filled from the factory with the synthetic CHF 11S Audi power steering fluid (G002000). Please Note: Never mix generic power steering fluid or other fluid with the CHF 7.1 or CHF 11S Audi hydraulic fluid (G002000). If you or someone else did, flush the Audi power steering fluid as described below.
I guess this answers the question about mixing compatibility, but says nothing about mixing non-mineral type synthetic with Audi-synthetic/mineral. So yes you can add synthetic fluid to your power steering reservoir and be OK, but aren't you diluting away from the non-hygroscopic ability of the Audi synthetic/mineral type fluid?
I see online at various autopart suppliers the mineral-synthetic, Pentosin 11S, not cheap, but that is likely the best thing to use to top off with I guess.
Changing power steering fluid is an ounce of prevention that may save you down the road, if you are planning on keeping your car a long time. My 97 A6 has now 95k, I bought it recently and expect from my good maintenance another 95k, or about 5 years, so yes to me it is well worth doing all the fluid changes, also including rear differential, however that may be considered a bit anal, but the last 3 cars I bought used, similar to this one, have taken me to 300,000 miles, each of the three received the same fluid changes, never had any major problems, and in the end for each it was usually heater cores gone bad, or too much rust, that ended their roadworthiness for me.
< Message edited by IDUA ORTTAUQ 6A -- 10/10/2007 2:34:08 PM >
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