Recent Topics
At what point to drop comp/collision insurance?
by Quattro Pete
10/30/14 09:18 AM
$10 off any $50 gas card w/ $50 purchase at Publix
by LT4 Vette
10/30/14 08:39 AM
Tire Review-AltiMAX RT43
by Char Baby
10/30/14 08:18 AM
2014 Ram 1500 3.0l VM Diesel UOA
by Shaker223
10/30/14 07:39 AM
2012 Elantra 1.8
by dlundblad
10/30/14 07:37 AM
Why The Demise of Timing Belts?
by doitmyself
10/30/14 07:00 AM
Most shootings occur after an argument...
by Shannow
10/30/14 05:54 AM
expectant couples
by dnewton3
10/30/14 05:35 AM
10/30-11/26 Advance Ad
by tenderloin
10/30/14 02:06 AM
Castrol edge in lawn mower?
by sky06
10/30/14 01:35 AM
Question about C4 Corvette Dash Readings
by tinmanSC
10/30/14 01:06 AM
SF wins world series, MVP gets new midsize truck?
by another Todd
10/30/14 12:20 AM
Newest Members
FiveOhTorx, conefree, NEVALEAK, kevmor99, macbaxter
51742 Registered Users
Who's Online
80 registered (3800Series, 1999nick, Asterix, Astro14, ARCOgraphite, 6 invisible), 1407 Guests and 157 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
51742 Members
64 Forums
221403 Topics
3501261 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: 256
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: 1316
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: 256
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: 256
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