power steering goes again.

[adem.csl]

I'm fitting what came out.this car has atf in it
I've only ever seen atf come out of these so I don't know if they've been drained flushed and superseded

[Monkey]

Originally Posted by adem.csl

I'm fitting what came out.this car has atf in it
I've only ever seen atf come out of these so I don't know if they've been drained flushed and superseded

You're quite right mate, that's what I use. On certain cars we change the ATF to CHF-11S to eliminate certain noises, but it's not something I've seen recommended for the CSL. It may well work fine with the CHF-11S, not something I've ever needed to do though. I think between myself and Adem we look after a few E46 m3s....

[adem.csl]

Originally Posted by Monkey

You're quite right mate, that's what I use. On certain cars we change the ATF to CHF-11S to eliminate certain noises, but it's not something I've seen recommended for the CSL. It may well work fine with the CHF-11S, not something I've ever needed to do though. I think between myself and Adem we look after a few E46 m3s....

+1

[Chad]

Stand corrected. Confusion lies on realoem , label for oil container power steering pump chf11.s. Cap says atf

[khooni]

so i bought the wrong fluid then

[Chad]

Originally Posted by khooni

so i bought the wrong fluid then

As far as understanding 11s can replace old oil , generally it's used in colder climates, as its better for that purpose, BMW supply label to stick over atf written on cap, don't mix two oils, better to completely renew, both types of oils are for hydrolic systems, don't see any problem BMW recommend it for colder climate, BUT check manufactures instructions if you can find any, sure I will be corrected if I'm wrong, chf fluid was designed to run at higher temperatures and pressure over a long period, could possibly be better in a hard working csl , excluding garage queens..

[Chad]

Any feedback on this guys,always interesting to hear if anybody has different views or experience on this subject, oil technology moves on,

[khooni]

Adem fixed my power steering. Thanks mate

its lighter than I remember now. Perhaps it was indeed pinched leading to eventual failure. Think I will need the billet steering coupler for increased feel.

[Chad]

Hi guys ,I'm still of the opinion chf can be used, Adem James are you still of the opinion chf shouldn't be used in Csl, as I may just give it a go in my csl to compare steering performance

[adem.csl]

Originally Posted by Chad

Hi guys ,I'm still of the opinion chf can be used, Adem James are you still of the opinion chf shouldn't be used in Csl, as I may just give it a go in my csl to compare steering performance

Mate to be honest I don't think you will feel a massive performance increase.
The techs that built the Csl must have genuinely thought that atf was sufficient for the power steering system and stuck to that.im not an oil guru so I can't comment further all I can say in my opinion is that the power steering works far less then the smg pump system.smg gets a lot hotter has far more functions as in its gotta control 3 hydraulic valves so it would be the obvious choice for that system.whereas your pas system is basically a loop around the rack.secondly the rack sits below the engine and it stays cooler as the cold air passes it and once moving steering is under less pressure to work as opposed to standstill turning this could be a factor in not using chf 11s.you would need a technical sheet to compare the 2 oils.its like dot 4 vs dot 5.2 brake fluid higher boiling temps but that will only count if you really abuse the brake system.so summary you could in deed use chf 11s if you felt like you Needed to but I'm sure if Bmw deemed it nesseccary they would have used it in first instance.dont forget they spent I think £95k developing the Csl and sold them at a loss of around £65k to get them outta the door.the techs we met who built the cars said if they had their way it would be so much more track orientated but the average car enthusiast had to be able to drive it.anyone agree?
As I said I'm not an oil guru and I've not noticed any benefit switching brands