Recent Topics
1991 Toyota Previa New JDM engine Redline
by Kurtatron
06/21/18 06:26 PM
8 yr old channeling John Bonham
by Toy4x4
06/21/18 06:02 PM
Traveller nlgi 2
by Spitter
06/21/18 05:33 PM
Upgrading the Kohler 7000 series air cleaner
by Patrick0525
06/21/18 05:08 PM
Any nano reefers here?
by RichardS
06/21/18 05:04 PM
ARC remanufactured Power Steering Pump
by Pajero
06/21/18 04:58 PM
John Deere "Easy Change" System gimmick
by SnowmanCO
06/21/18 04:55 PM
Oz Planstic Bag Bans - not so green.
by Shannow
06/21/18 04:31 PM
help me choose...
by chaindrive
06/21/18 04:07 PM
France F1 Grand Prix
by DeepFriar
06/21/18 03:16 PM
Valvoline High Mileage with maxlife tech semi-syn
by bradtech
06/21/18 03:16 PM
Best additive in oil to clean sludge?
by ffgb
06/21/18 02:19 PM
Who is a Dirt Track regular?
by thooks
06/21/18 01:39 PM
eco plug oil plug video is restricted
by edwardh1
06/21/18 01:27 PM
Political comments
by ridgerunner
06/21/18 01:23 PM
My Ford orange turned pink
by BeerCan
06/21/18 12:45 PM
Any plants/garden experts?
by maverickfhs
06/21/18 12:43 PM
Internet Sales Tax O.K.ed by Supreme Court
by doitmyself
06/21/18 12:23 PM
Brake fluid for a '03 Volvo S60
by earthworm
06/21/18 11:22 AM
Oil Weight Change - Mid Production Cycle
by PolarisX
06/21/18 11:20 AM
Newest Members
wil892, Spddm0n, ronw1309, Suth31, yamahaboy125
65286 Registered Users
Who's Online
113 registered (007, 93cruiser, 5AcresAndAFool, 77GrandPrix, 97prizm, alphadog, 12 invisible), 1453 Guests and 38 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65286 Members
67 Forums
285727 Topics
4768578 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Topic Options
#4558507 - 10/29/17 04:00 PM Recommended starter motor grease
VincentVega Offline

Registered: 10/29/17
Posts: 3
Loc: US
What would you guys suggest for starter motor grease? In my case, it is a gear reduction unit with 3 metal planet gears and a plastic ring gear.

The original armature shaft grease appeared to be a very dark green, and it was used both in 2 bronze bushings as well as a steel on steel bushing. The planet assembly had what really, really looked like molybdenum sulfide (moly) grease on it (can't be sure) which surprised me because of the plastic. That was a very dark gray in appearance, but smeared out on paper with an almost brown hue to it.

I live in a pretty cold climate, so I was also looking for stuff that had a pretty good temp range.

Thanks for any advice

Edited by VincentVega (10/29/17 04:01 PM)

#4558515 - 10/29/17 04:08 PM Re: Recommended starter motor grease [Re: VincentVega]
andyd Online   content

Registered: 09/25/04
Posts: 7147
Loc: Marshfield , MA
Chassis lube for the gears,just a smidge on the starter drive.. The dark green grease may be a marine grease that might be good. I use whatever grease is handy when assemble a DC motor.
'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2

#4558518 - 10/29/17 04:11 PM Re: Recommended starter motor grease [Re: VincentVega]
SubLGT Offline

Registered: 01/31/06
Posts: 2646
Loc: Idaho
Starter motors must withstand the elements, temperatures from -40C to 200C, and 50,000 duty cycles or more. Issues of high load and torque, especially during cold crank, also have to be considered. Effectively lubricating the motors’ gears, bearings, and splines requires a careful blend of synthetic oils, additives and gellants. Popular starter motor lubricants feature PAO and ester blends with additives for extreme pressure, corrosion protection, and friction reduction.

Edited by SubLGT (10/29/17 04:17 PM)

#4558638 - 10/29/17 06:28 PM Re: Recommended starter motor grease [Re: VincentVega]
Merkava_4 Offline

Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
+1 to the Dow Corning recommendation. They have an excellent line of application specific greases.

#4559933 - 10/31/17 08:23 AM Re: Recommended starter motor grease [Re: VincentVega]
VincentVega Offline

Registered: 10/29/17
Posts: 3
Loc: US

#4560194 - 10/31/17 12:23 PM Re: Recommended starter motor grease [Re: VincentVega]
nthach Offline

Registered: 01/02/04
Posts: 3898
Loc: California
The Japanese bearing OEMs as well as many electric motor manufacturers are fond of using "synthetic" polyurea thickened greases like Chevron SRI or Mobil Polyrex EM, those greases are bluish green to green in color.

Dow tends to recommend Molykote 33 for most electric motor uses, it's not an EP grease - it's a silcone-based lithium grease that's friendly to most plastics.

You could get away with SRI/EM grease on all the parts. If the bushings are accessible externally or have an oil reservoir, a light non-detergent oil like Zoom Spout might be a better choice.

#4562184 - 11/02/17 03:25 PM Re: Recommended starter motor grease [Re: VincentVega]
VincentVega Offline

Registered: 10/29/17
Posts: 3
Loc: US
thank you!