Recent Topics
F1 - 2016 Belgian Grand Prix
by gofast182
08/24/16 07:55 PM
Ethernet card uograde needed?
by NHHEMI
08/24/16 07:27 PM
2012 Suzuki DL1000 VStrom Oil Recommendations
by RHALL
08/24/16 07:24 PM
Audio/Micro Adapter Help
by coopns
08/24/16 07:18 PM
Purolator boss 2222 6,200 miles
by gabriel9766
08/24/16 06:49 PM
Fram Ultra paint peeling
by Run
08/24/16 06:26 PM
Cell phone mount suction cup doesn't stick
by mclasser
08/24/16 06:02 PM
2008 Nissa Versa 110,000 miles second report.
by Datarock
08/24/16 05:07 PM
Best Oils for Direct Injection & Turbo Engines
by BobsArmory
08/24/16 04:45 PM
cheap upgrade to win 10 from win 7 s/n
by bmwjohn
08/24/16 04:25 PM
trimmer loses power when hot
by motor_oil_madman
08/24/16 04:21 PM
NAPA "GOLD" #1358, 10,080 miles CUT OPEN
by car51
08/24/16 04:01 PM
Newest Members
ShadowSix, warfire, Brutus232, gojoneeded, jimmyangst
58911 Registered Users
Who's Online
118 registered (andrewlg, 2015_PSD, 29662, 2002 Maxima SE, Al, 11 invisible), 1736 Guests and 10 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
58911 Members
66 Forums
253509 Topics
4161400 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: 341
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: 1375
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: 341
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: 341
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