Recent Topics
Warranty Facts
by BrianC
10/24/14 07:32 PM
2010 Honda Pilot, 3.5, 30k on engine, 5,4k on QSUD
by p1zippie
10/24/14 06:32 PM
THE BABY SKUNK
by Charlie1935
10/24/14 06:04 PM
Affixing brackets to fiberglass
by Apollo14
10/24/14 05:17 PM
Brakes on the "Bluesmobile" - the final update
by GreeCguy
10/24/14 03:47 PM
Liquid Moly
by Pelican
10/24/14 03:43 PM
New altitude world record parachute jump
by Drew99GT
10/24/14 02:30 PM
Replacing Valve Stem Seals, Honda or Aftermarket?
by zpinch
10/24/14 02:28 PM
Saw Mercedes out testing the Concept Coupe SUV
by 01rangerxl
10/24/14 02:24 PM
high speed wipers
by hardcore302
10/24/14 01:59 PM
does one need all 4 winter tires?
by hardcore302
10/24/14 01:53 PM
Bosch Icon Wipers
by gpguy
10/24/14 01:41 PM
Newest Members
Hox, massbrad, jtrix, SR1919, bigdaveyl
51684 Registered Users
Who's Online
96 registered (901Memphis, 01_celica_gt, andyd, 77GrandPrix, 10 invisible), 1625 Guests and 227 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
51684 Members
64 Forums
221159 Topics
3496641 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: 1315
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