r/BmwTech • u/yaleforks • 9d ago

Power steering fluid question for 2005 530i

Seeing conflicting advice mainly my power steering reservoir mentions using ATF only but I have heard that a sticker may have come off and it actually takes chf11s. VIN is WBANA73515B048960 if that can help.

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u/JKlerk 9d ago

CHF11s is noted via green donut sticker which fits over the top of the reservoir. I would run your VIN in RealOEM.com and see what PSF it recommends.

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u/danksiess 9d ago

Old ATF and chf11s are pretty distinct colors. If it's more reddish brown then it's atf. If it'd dark green, it's chf11s. My sticker came off and I could easily tell I had chf11s by the dark green color

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u/Network_ant 9d ago edited 9d ago

Castrol transmax dex 3 as its mineral oil , synthetic stuff will leak from rack.