Chevron Lubricants Q&A

click here to participate in the Chevron Lubricants Q&A

Recent Topics
Fake emails
by SVTCobra
04/27/15 08:15 AM
Front brake M shaped clips/where to put?
by callbay
04/27/15 07:57 AM
Where to buy Phillips 66 Trop Artic ??
by LoneRanger
04/27/15 06:55 AM
BITOG has an oil filter manufacturing date chart?
by Ed_Flecko
04/27/15 06:51 AM
Thoughts on 1st Gen Mazda RX-7s
by Clubber_Lang
04/27/15 03:53 AM
AMSOIL 10W-40 in 1991 Proton Saga 14900km
by alcyon
04/27/15 03:06 AM
Computer storage
by mjoekingz28
04/27/15 01:28 AM
Marvel Mystery Oil
by mklearl
04/27/15 01:25 AM
Split Lock Washers
by Merkava_4
04/27/15 12:49 AM
Weeping Magnefine elimination
by wrcsixeight
04/26/15 11:41 PM
ATF+4 question
by Srt20
04/26/15 11:14 PM
Used Police Cars- A good choice?
by Fitz98
04/26/15 10:41 PM
Newest Members
Acid_Rock_Racer, chasm22, digitalbilly, farmerjohn, kruq
53748 Registered Users
Who's Online
88 registered (29662, A310, 2010_FX4, Andrei, alarmguy, 02s4audi, 7 invisible), 1613 Guests and 189 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
53748 Members
66 Forums
230394 Topics
3688186 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#3392149 - 06/08/14 12:06 PM What grease for EPS steering gears?
Scout1 Offline


Registered: 08/06/07
Posts: 297
Loc: Seattle WA
I have the common "sticky steering" problem on my 2003 BMW Z4. BMW refuses to recall these so instead of replacing the steering column for $3k, there appears to be a fix where some lubricant is squirted into the gearbox. This fix involves drilling a new hole so that can be done so it's not for the faint of heart.

I'm trying to figure out what grease would be best. I've read on the Bimmer Forums that folks have had success but there doesn't appear to be a consensus on the type of lubricant that should be injected. Some use standard grease (I assume Moly) others use silicon gun oil. The gears are some sort of plastic or nylon and BMW seems to use a urea grease on the newer models.

Reading on the WEB I figure I would want to use a synthetic PAO or silicon based grease without moly or EP additives. Anyone have any advice? What's urea grease all about?


Edited by Scout1 (06/08/14 12:07 PM)
_________________________
Scout1
Truth will always bear up against falsehood, as oil does above water

Top
#3392328 - 06/08/14 04:33 PM Re: What grease for EPS steering gears? [Re: Scout1]
123Saab Offline


Registered: 10/27/10
Posts: 1349
Loc: PA
_________________________
Twenty-twenty-twenty four hours to go I wanna be sedated
Nothin' to do and no where to go-o-oh I wanna be sedated

Top
#3392477 - 06/08/14 07:37 PM Re: What grease for EPS steering gears? [Re: 123Saab]
Scout1 Offline


Registered: 08/06/07
Posts: 297
Loc: Seattle WA
Thanks for the link! So the polyurea greases are mostly for high temp applications and it's a thickener basically. Not really a consideration for my fix I figure. Reading more about these urea greases it sounds like they are mostly for lubed forever applications and if succesful, I'll have a zerk fitting on my gearbox I can shoot more in if I need to...
_________________________
Scout1
Truth will always bear up against falsehood, as oil does above water

Top
#3422601 - 07/12/14 12:10 PM Re: What grease for EPS steering gears? [Re: Scout1]
Scout1 Offline


Registered: 08/06/07
Posts: 297
Loc: Seattle WA
Thought I'd give a follow-up. I went ahead and installed the zerk fitting and pumped in some Valvoline Cerulean grease. Seems to work fine and has fixed the problem to a certain extent. I don't think any lubricant can totally fix a binding condition, which I'm fairly certain this is, but the steering feel on my Z4 has improved considerably with the grease in there.

Why the Cerulean? I learned that lithium complex greases are the most widely compatible so I went conservative. Cerulean isn't synthetic and doesn't have a lot of exotic additives so it's pretty basic mineral oil grease. Seems to help a lot with my problem.
_________________________
Scout1
Truth will always bear up against falsehood, as oil does above water

Top