Power steering reservoir cap seal ?

Dibdob69 · 5th January 2021, 11:37

Is the power steering reservoir cap supposed to have an o-ring to seal it ?

My reservoir is covered in oil and it looks like its coming from the cap

trikey · 5th January 2021, 12:24

No seal on the cap, it will be the vapours escaping causing the film of fluid you are seeing.

Dibdob69 · 5th January 2021, 12:28

Quote:

Originally Posted by trikey

No seal on the cap, it will be the vapours escaping causing the film of fluid you are seeing.

Thanks trikey

beinet1 · 5th January 2021, 13:11

There is a tiny O-ring under the cap. Look closely at the bottom of the threads, and you will find it. There is also a ventilation bore in the cap, so the oil will probably come from this one.

P.S.

You will find the most here: https://bimmertips.com/bmw-power-ste...l-replacement/

vitesse · 5th January 2021, 13:57

Quote:

Originally Posted by Dibdob69

Is the power steering reservoir cap supposed to have an o-ring to seal it ?

My reservoir is covered in oil and it looks like its coming from the cap

Friend of mine bought a V6 that had a plastic coke bottle plumbed in through the cap to the reservoir to drain excess fluid. Swopped the pump for a good used one and didn't need the coke bottle anymore.

Could be a sign the pump is on its last legs, but diesel pumps are different so a guess.

Regards

COLVERT · 5th January 2021, 17:18

Could be bubbles forming in the system making the oil froth and leak out as it expands.---

bl52krz · 6th January 2021, 20:29

Every time I check my power steering fluid, I give the cap and the surrounding top area a wipe off of the fluid. If you don’t I find that the oil that is around the top will spread over the top.

genpk · 7th January 2021, 20:00

all the power steering resivours ive seen on 75s all have a film of oil around them.
As mentioned , think its vapour.

5th January 2021, 11:37	#1
Dibdob69 Newbie Rover 75 saloon Join Date: Dec 2020 Location: Royal Leamington Spa Posts: 28 Thanks: 10 Thanked 5 Times in 1 Post	Power steering reservoir cap seal ? Is the power steering reservoir cap supposed to have an o-ring to seal it ? My reservoir is covered in oil and it looks like its coming from the cap

5th January 2021, 12:24	#2
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,764 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	No seal on the cap, it will be the vapours escaping causing the film of fluid you are seeing. __________________ Lest we forget..

6th January 2021, 20:29	#7
bl52krz This is my second home Rover 75 cdt club + Rover 2.5 KV6 Conni SE Join Date: May 2008 Location: Birmingham Posts: 11,387 Thanks: 6,587 Thanked 2,262 Times in 1,729 Posts	Every time I check my power steering fluid, I give the cap and the surrounding top area a wipe off of the fluid. If you don’t I find that the oil that is around the top will spread over the top. __________________ Great Barr, Birmingham.

5th January 2021, 13:11	#4
beinet1 Posted a thing or two Rover 75 2.0 V6 Auto Join Date: May 2011 Location: Sandnes - Norway Posts: 1,560 Thanks: 64 Thanked 283 Times in 174 Posts	There is a tiny O-ring under the cap. Look closely at the bottom of the threads, and you will find it. There is also a ventilation bore in the cap, so the oil will probably come from this one. P.S. You will find the most here: https://bimmertips.com/bmw-power-ste...l-replacement/

5th January 2021, 17:18	#6
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	Could be bubbles forming in the system making the oil froth and leak out as it expands.---

7th January 2021, 20:00	#8
genpk Posted a thing or two Rover 75 Saloon MGZT Join Date: Jul 2012 Location: Perth, AUSTRALIA Posts: 1,662 Thanks: 3 Thanked 461 Times in 299 Posts	all the power steering resivours ive seen on 75s all have a film of oil around them. As mentioned , think its vapour.