Power Steering Fluid
10-05-2016, 06:23 AM
#11
AudiWorld Senior Member
Thread Starter
Good stuff to know, thanks! Went with the 11S. It looks like the PS fluid may have been changed prior to me buying the car. Stuff coming out didn't look dirty at all, just low. Onto the brake fluid next!
10-05-2016, 08:09 AM
#12
AudiWorld Super User
I recommend a pressure bleeder. The one linked below also comes with fittings to use it to fill transmissions.
https://www.ecstuning.com/Audi-D3_A8...ols/ES2774836/
https://www.ecstuning.com/Audi-D3_A8...ols/ES2774836/
10-07-2016, 03:18 PM
#13
AudiWorld Super User
Looks like Pentosin no longer makes the 7.1. But Febi does. I like the green label on the reman steering rack. OK kids, no generic $4.00 power steering fluid.....
10-07-2016, 03:37 PM
#14
AudiWorld Super User
We agree on a lot of things, but not that. I wouldn't touch 7.1 with a ten foot pole; ditto on G11 antifreeze. Last seen on our mutual 5000's for me, the ones with literally the appropriate "bomb"or "grenade" part in the system so our brakes kept working, at least for 20 or 30 pumps til, oh well. ...the ones that ran at 1000PSI until I backed it down to about 800 with some retrofit banjo bolts they TSB'ed. Yep, what could possibly go wrong--and did in spades. I get sort of a nervous twitch when I think of things either 5000 or 100LS.
Diff between 7.1 and 11S is mineral vs. synthetic as I recall. They got to synthetic by 90's. In like a mid 90s Audi 100/first of A6 nomenclature era TSB IIRC. But since Audi ordered about 20,000,000 reservoir caps that said "nur Mineralhydraulik" even if they meant the G002 spec, aka 11S, I think they confused a lot of people. Saw that on my 2000 A6 4.2 with the wrong cap labeling. When I was back at the cut over point and could still drain and replace the fluid with a simple hose pull at the cooler line, the synthetic was quieter at very cold Tahoe winter (think MI in lieu) temps. Didn't matter in milder temps.
Diff between 7.1 and 11S is mineral vs. synthetic as I recall. They got to synthetic by 90's. In like a mid 90s Audi 100/first of A6 nomenclature era TSB IIRC. But since Audi ordered about 20,000,000 reservoir caps that said "nur Mineralhydraulik" even if they meant the G002 spec, aka 11S, I think they confused a lot of people. Saw that on my 2000 A6 4.2 with the wrong cap labeling. When I was back at the cut over point and could still drain and replace the fluid with a simple hose pull at the cooler line, the synthetic was quieter at very cold Tahoe winter (think MI in lieu) temps. Didn't matter in milder temps.
Last edited by MP4.2+6.0; 10-07-2016 at 03:55 PM.
10-07-2016, 05:08 PM
#15
AudiWorld Super User
Well, my '04 says Mineral only as well as my '01 Beetle. Been using it in these as well as my long-gone '87 5000. Not sure about the reservoir cap on Ballykid's '03 TT but he has used the 7.1 to top up for the three years he's had the car. Also when he lost everything when a banjo bolt loosened after he replaced his clutch as well as his little engine oil leak via holes in the engine block saga, the PS fluid was replaced. The original stuff smelled like the replacement 7.1 fluid/oil. I still have three Pentosin 7.1 cans. Also note the conventional (brown) power steering fluid in the long-gone VW/Audi Autobahn labeled bottle. This was for my first VW/Audi with "power assist" steering; my 1981 Audi 4000 5+5 !
Tomorrow, the subframe comes off and the rack hopefully comes out and goes in in his TT.
Tomorrow, the subframe comes off and the rack hopefully comes out and goes in in his TT.
10-07-2016, 09:46 PM
#16
AudiWorld Super User
Good luck to him with the rack, since we have both BTDT...
Sounds like you have several of these 20,000,000 or so hydraulic fluid caps with the mineral oil wording they had to work down in inventory over about 10 years... Sort of like my W12 (replacement) coolant bottle where they left off a few pluses on G12 even though the spec major changed when the phosphates went back in.
Attached is my old fluid spec copy back to the 2004 MY. G002, and ditto on that year's TT. I have the 2003 version BTW if any use for Ballykid. The G002 reference may pull in either type nominally from some sources, though when I found the old Pentosin 7.1 spec sheet, it does not actually tie to G002. The 11S sheet definitely does. See what the bottle you got in Febi says, or your other cans. By 2004 I'm pretty sure the dealers didn't even stock Audi fluid back in 7S unless they pulled out a Pentosin branded can.
7S spec sheet: http://www.pentosin.net/pressrelease..._CHF7-1_V2.pdf
11S spec sheet: http://www.pentosin.net/specsheets/pentosin_chf_11s.pdf
Sounds like you have several of these 20,000,000 or so hydraulic fluid caps with the mineral oil wording they had to work down in inventory over about 10 years... Sort of like my W12 (replacement) coolant bottle where they left off a few pluses on G12 even though the spec major changed when the phosphates went back in.
Attached is my old fluid spec copy back to the 2004 MY. G002, and ditto on that year's TT. I have the 2003 version BTW if any use for Ballykid. The G002 reference may pull in either type nominally from some sources, though when I found the old Pentosin 7.1 spec sheet, it does not actually tie to G002. The 11S sheet definitely does. See what the bottle you got in Febi says, or your other cans. By 2004 I'm pretty sure the dealers didn't even stock Audi fluid back in 7S unless they pulled out a Pentosin branded can.
7S spec sheet: http://www.pentosin.net/pressrelease..._CHF7-1_V2.pdf
11S spec sheet: http://www.pentosin.net/specsheets/pentosin_chf_11s.pdf
Last edited by MP4.2+6.0; 10-07-2016 at 09:50 PM.
10-21-2016, 08:19 PM
#17
AudiWorld Member
I used chf202 on my 2009 a8. Even my PS cap is labeled with an older oil also. Been working well for 6 months. I used 2 liters and sucked out fluid started and refilled till all 2 liters were used because it is hard to get the reservoir hoses off, and the plastics get brittle over time, so i did not want to risk breaking stuff.
10-22-2016, 05:22 AM
#18
AudiWorld Super User
Forgot to post these from a couple of weeks ago. Steering rack replacement is so much fun on Audi's.
Hopefully this is the last one I work on ever. Doubtful though.
As for the last pic, Ballykid learned a valuable lesson in Hydraulics. He ordered new banjo bolt seals from ECS along with the stretch bolts for the subframe. They weren't packed well and the bolts bent the seals. I noticed the bend while under the car and asked him to straighten it. He was supposed to tap it or use the flat anvil of long nose pliers. Unfortunately, he made a lovely nick in the seal (12 o'clock position ) that I did not see. After bolted together and filled with green gold, a stream of it was shooting out. He then realized what had happened. Bad thing was that the subframe was already back in place.....
Hopefully this is the last one I work on ever. Doubtful though.
As for the last pic, Ballykid learned a valuable lesson in Hydraulics. He ordered new banjo bolt seals from ECS along with the stretch bolts for the subframe. They weren't packed well and the bolts bent the seals. I noticed the bend while under the car and asked him to straighten it. He was supposed to tap it or use the flat anvil of long nose pliers. Unfortunately, he made a lovely nick in the seal (12 o'clock position ) that I did not see. After bolted together and filled with green gold, a stream of it was shooting out. He then realized what had happened. Bad thing was that the subframe was already back in place.....
10-22-2016, 08:39 AM
#19
AudiWorld Super User
Forgot to post these from a couple of weeks ago. Steering rack replacement is so much fun on Audi's.
Hopefully this is the last one I work on ever. Doubtful though.
As for the last pic, Ballykid learned a valuable lesson in Hydraulics. He ordered new banjo bolt seals from ECS along with the stretch bolts for the subframe. They weren't packed well and the bolts bent the seals. I noticed the bend while under the car and asked him to straighten it. He was supposed to tap it or use the flat anvil of long nose pliers. Unfortunately, he made a lovely nick in the seal (12 o'clock position ) that I did not see. After bolted together and filled with green gold, a stream of it was shooting out. He then realized what had happened. Bad thing was that the subframe was already back in place.....
Hopefully this is the last one I work on ever. Doubtful though.
As for the last pic, Ballykid learned a valuable lesson in Hydraulics. He ordered new banjo bolt seals from ECS along with the stretch bolts for the subframe. They weren't packed well and the bolts bent the seals. I noticed the bend while under the car and asked him to straighten it. He was supposed to tap it or use the flat anvil of long nose pliers. Unfortunately, he made a lovely nick in the seal (12 o'clock position ) that I did not see. After bolted together and filled with green gold, a stream of it was shooting out. He then realized what had happened. Bad thing was that the subframe was already back in place.....
One bright spot: in 2022 or when ever it is you get that D4, as of circa 2013 no more conventional rack as they cut to electric. It would also be quite the marshmellow roast if the rack were in the conventional hydraulic position still. The huge headpipes sweep right through there exiting the oh so hot twin turbos from the inboard V position. Thus even better, instead of the old infernal position with the whole car assembled around the rack as it moves down the Neckarsulm line, it now is in a channel at the far bottom of the engine subframe. Pretty much the first thing you see farther back when you pull off the main belly pan.
Last edited by MP4.2+6.0; 10-22-2016 at 08:50 AM.
10-22-2016, 11:34 AM
#20
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I see Audi is becoming smarter over these last few years lol. For some reason I thought D4's had conventional power steering. But anyways, how is your D3 doing MP4.2? Still have it? And I love looking at fresh bushings as pictured on your D4. Hopefully they won't give out easily like they have on earlier Audis.