As long as it's completely flushed through no cross contamination you can use it.you shouldn't do any damage
One last thought.as your atf cools then heats and cools and heats cycle it does start to break down turns brown kind of colour now simply changing the atf as good service practice will not only improve steering feel it will clear the system of worn debris floating in the oil.didyou know the reservoir has a filter in it.ive only seen it once but these can collapse or block causing steering to feel heavier then usual.these are only my opinions and not facts guys ok

thanks Aden just wanted to confirm it can be done without problems, don't doubt any thing you said , fluid wise if there's anything better out there why not try it:thumbs: ps from what I've read atf good for about 60k before it breaks down, chf could do100k ,.. makes me wonder if there was a cost factor involved.., but that's just my thoughts

Well as you stated earlier oil technology moves n my e90 uses chf 11s so there's no reason Csl can't
I don't know as for cost factor all I recal hearing was that the cars cost more to make then they were sold for
It's marketing proof that Bmw could make one of the most legendary cars ever.i think that's what their aim is regardless of all the new m series cars they have produced the Csl and e30 m3 evo sport are thier finest cars in my opinion

Totally agree you Adem,still love every minute in csl, am on 67 k now am off to goodwood next wk in csl got it booked on super car parking Saturday, will be doing full full steering oil change when I get back, think it's probably due one, see if it make a notable difference :thumbs:

Wicked
Can't hurt to try
Mines at 76k I wanna bring it in and fit my headgasket and schrick cams

Further to this power steering fluid,I’ve not had chance to try chf as yet. But I’m just going to do a part flush for now Do you just use the std semi synthetic atf dexron 111 “red” Oil anybody??? Was in bmw this morning and they couldn’t find a part number or any stock of atf at local dealership???? Just read bmw oil spec for power steering fluid , says to use equivalent to dexron11 Anybody know difference between dex11 and Dex111 ?? Is dexron 11 just a mineral oil, Dexron 111 is a semi synthetic, ....ok I’ve found it dexron 11 relates to mineral atf. Such as castrol TQ dexron 11d -22 765. Or castrol transmax sd21 923. Others Olso, used for older transmissions ha ha ,,so if you can’t find the correct type atf .. There nothing wrong with using chf11 as it’s the only synthetic atf that bmw recommends for out steering rach according to bmw data sheet, completely flush system of course ,, can’t go wrong that way,,

Bit of a bugger when you go to bmw for a part number for the mineral atf,, and the don’t know ,, then you go to an independent motor factors , and with car details inc chassis no. Data system comes back with chf11 ,, Ok you can use this ,, so novice would probably mix the two ,, not good ! But are so called specialists Indi’s mixing the red semi synthetic atf with the red mineral atf,, could this be why the steering rach gets trashed , mabe you can mix the reds anybody???,, just a rant chaps all very confusing this atf:whistle:

Speak to Gareth at Bartletts :) ?